Competition Law and Reputation-Based Competition

1. Introduction

Reputation-based competition refers to the process by which businesses compete through their perceived reliability, quality, integrity, customer service, safety, innovation, and trustworthiness. A firm's reputation can become a significant competitive asset because consumers frequently rely on past experience, reviews, ratings, recommendations, certifications, and brand credibility when choosing between competing products or services.

In competition law, reputation is generally a legitimate means of attracting customers. A business that consistently provides better products, honours warranties, protects customer data, and resolves complaints efficiently may gain market share because consumers prefer it over rivals.

However, reputation can also become a mechanism for exclusion when businesses manipulate online reviews, suppress negative feedback, collude on quality signals, misuse certification systems, or exploit control over platforms that determine which firms appear trustworthy.

The central legal question is therefore:

Does a firm's reputation reflect genuine competitive merit, or is it being used to distort competition and exclude rivals?

Reputation-based competition is relevant to traditional industries such as banking, hospitality, pharmaceuticals, and retail, as well as digital markets involving online marketplaces, app stores, search engines, social media, financial technology, and AI-driven recommendation systems.

2. Meaning and essential characteristics

Reputation-based competition has six principal characteristics.

Trust as a competitive asset: Consumers may prefer businesses with established records of reliability and fair dealing.

Quality signalling: Reviews, ratings, rankings, awards, warranties, and professional certifications help consumers assess products before purchasing.

Dynamic competition: New entrants can challenge established businesses by building a superior reputation over time.

Information asymmetry: Consumers often cannot directly assess product quality before purchase and therefore depend on reputational indicators.

Network effects: On review platforms, a larger customer base can generate more feedback, attracting still more customers and reinforcing a firm's position.

Reputational barriers to entry: New businesses may struggle to compete when consumers place excessive weight on incumbent ratings, historical sales, or platform-controlled trust indicators.

Reputation is not inherently anti-competitive. Competition law becomes relevant when the conduct used to create, maintain, communicate, or exploit reputation infringes applicable competition rules.

3. Legal framework

A. Competition through superior quality

Competition law ordinarily protects a firm's ability to attract customers through superior quality, reliability, service, innovation, and brand reputation.

A business does not violate competition law merely because it has a strong brand or because consumers trust it more than competitors. The legal concern arises when reputational advantages are maintained through exclusionary conduct, collusion, deception, or restrictions that materially impair competitive opportunities.

B. Abuse of dominance

A dominant enterprise may breach competition rules if it uses its reputation or control over reputational infrastructure to exclude competitors.

Potential practices include:

Giving its own products preferential ratings or visibility on a platform it controls.

Deliberately suppressing legitimate negative reviews of its own services while publishing negative reviews of rivals.

Preventing competitors from accessing essential review data or recognised verification systems without objective justification.

Conditioning access to a valuable marketplace on the use of affiliated certification or reputation-management services.

Using loyalty arrangements or exclusivity provisions to prevent competing businesses from developing independent reputations.

Dominance alone is not unlawful. The relevant question is whether the conduct constitutes an abuse under the applicable legal framework.

C. Anti-competitive agreements

Businesses may unlawfully restrict competition when they agree to manipulate reputational signals.

Examples include competitors coordinating false positive reviews, agreeing to post negative reviews against a rival, collectively boycotting a certification scheme, or agreeing not to deal with businesses that refuse to participate in a shared rating system.

Depending on the jurisdiction and evidence, such conduct may constitute collusion, a concerted practice, or another prohibited agreement.

D. Digital platforms and online reviews

Digital reputation systems create additional competition concerns because platforms may control the collection, verification, ranking, and presentation of reputational information.

A platform's ratings may influence consumer choice, access to customers, advertising costs, and a business's ability to enter a market. A platform can therefore become an important intermediary between reputation and commercial success.

Competition authorities may examine whether a platform:

applies ranking rules inconsistently;

favours affiliated businesses;

restricts data portability or review transfer;

imposes discriminatory access conditions; or

uses reputation data obtained from business users to advantage its own competing services.

E. Consumer protection and competition law

False reviews, undisclosed paid endorsements, fabricated ratings, and deceptive claims about reputation may primarily raise consumer-protection issues. They can also have competition-law implications when they distort competitive conditions, disadvantage honest rivals, or form part of exclusionary or collusive conduct.

The distinction matters: not every misleading review is an antitrust infringement, and not every reputational advantage requires regulatory intervention.

4. At least six case laws and enforcement decisions

The following authorities illustrate how competition law, unfair competition law, and consumer-protection principles can apply to reputation-based competition. An important distinction is that some are direct examples involving reputation systems, while others establish broader competition-law principles relevant to reputation, market access, and exclusion.

Case 1: Demetriades v. Yelp, Inc. (2014)

Jurisdiction: United States — California Court of Appeal.

Facts: A restaurant operator challenged Yelp's representations concerning the accuracy and effectiveness of its automated review-filtering system. The claim concerned whether Yelp's statements about the reliability and trustworthiness of displayed reviews were misleading.

Legal issue: Whether claims about the quality and reliability of an online review system could be challenged under California's unfair competition and false advertising laws.

Decision and principle: The appellate court reversed the trial court's order striking the complaint, allowing the plaintiff an opportunity to pursue the claim further. The decision concerned procedural and statutory issues; it did not establish that Yelp had manipulated reviews or violated antitrust law.

Relevance to reputation-based competition: Review platforms influence the commercial reputation of businesses. Representations about the reliability of their filtering systems can affect how consumers interpret ratings and how businesses compete for customers.

Key lesson: Reputation infrastructure must be analysed separately from the businesses whose reputations it measures. Claims about a platform's review methodology can themselves have commercial significance.

Case 2: Levitt v. Yelp! Inc. (2014)

Jurisdiction: United States — Ninth Circuit Court of Appeals.

Facts: Business owners alleged that Yelp manipulated reviews and used the alleged threat of adverse reviews to pressure businesses into purchasing advertising.

Legal issue: Whether the alleged conduct amounted to extortionate or unlawful business practices under the applicable federal and California legal principles.

Decision and principle: The Ninth Circuit affirmed dismissal of the relevant claims, finding that the allegations did not establish the required elements of extortion or the asserted unlawful business practices. The court did not establish that Yelp had manipulated the reviews as alleged.

Relevance to reputation-based competition: Businesses can become commercially dependent on third-party review platforms. However, a decline in ratings or pressure to purchase advertising does not, without sufficient evidence and the necessary legal elements, establish unlawful conduct.

Key lesson: Competition-law or unfair-competition allegations involving reputation platforms require evidence of the actual conduct and satisfaction of the relevant legal test, not merely evidence that a business suffered reputational harm.

Case 3: Federal Trade Commission v. Cure Encapsulations, Inc. (2019)

Jurisdiction: United States — Federal Trade Commission enforcement.

Facts: The FTC challenged the use of paid fake online reviews to promote a dietary supplement, alongside allegedly unsupported product claims.

Legal issue: Whether fabricated reviews and misleading endorsements could unlawfully distort consumers' assessment of a product.

Outcome: The defendants settled the FTC's action through a proposed court order restricting deceptive claims and misrepresentations about endorsements. The proceeding was resolved through settlement rather than a contested judicial finding on every allegation.

Relevance to reputation-based competition: Artificially inflated ratings can create a false impression of product quality and reliability. A business using fabricated endorsements may gain an advantage over competitors that incur the costs of earning genuine customer trust.

Key lesson: Reputation is a competitive asset, but manufacturing false evidence of consumer approval can distort market choices and expose a business to enforcement. The matter principally concerned consumer protection, not a standalone antitrust infringement.

Case 4: Federal Trade Commission v. Roomster Corp. (2022–2023 proceedings)

Jurisdiction: United States — Federal Trade Commission and state enforcement.

Facts: The FTC and several states brought proceedings alleging that Roomster, an accommodation-listing platform, used fake reviews and misleading listings to attract consumers.

Legal issue: Whether artificially created social proof and deceptive listings could mislead consumers into trusting a platform and paying for services.

Outcome: The FTC pursued the matter through litigation and related settlement proceedings involving an alleged supplier of fake reviews. The allegations against the relevant parties must be distinguished from any specific findings or settlement terms applicable to each defendant.

Relevance to reputation-based competition: Digital platforms often depend on user trust to attract both customers and suppliers. Fabricated positive feedback can create a misleading perception of reliability and divert demand away from legitimate competing platforms.

Key lesson: Where reputation manipulation affects entry, customer acquisition, and trust in a digital marketplace, consumer-protection enforcement may complement competition-law analysis.

Case 5: Federal Trade Commission — The Bountiful Company (2023 enforcement)

Jurisdiction: United States — Federal Trade Commission.

Facts: The FTC challenged alleged review hijacking involving newly introduced supplements. The company was accused of using an online marketplace feature to transfer or repurpose reviews and ratings associated with other products, thereby creating a misleading impression of the new products' popularity and quality.

Legal issue: Whether transferring reputational signals from one product to another could mislead consumers.

Outcome: The company agreed to a settlement involving monetary relief. This was a resolved enforcement matter, rather than a contested antitrust judgment.

Relevance to reputation-based competition: Product ratings are meaningful only when they accurately relate to the product being assessed. Improperly transferring reviews can give a new entrant or established seller an artificial reputational advantage over rival products with independently earned ratings.

Key lesson: Product reputation should be attributable to the product and consumer experience it purports to represent. Review portability and aggregation rules must not create misleading signals of quality.

Case 6: Federal Trade Commission — Hey Dude, Inc. (2023–2024 enforcement)

Jurisdiction: United States — Federal Trade Commission.

Facts: The FTC alleged that footwear retailer Hey Dude suppressed a substantial proportion of negative customer reviews, including reviews that did not meet a four-star threshold.

Legal issue: Whether selectively withholding negative feedback could misrepresent the overall customer experience and distort consumers' assessment of a business or product.

Outcome: The FTC announced a settlement in September 2023 involving a $1.95 million payment. The agency subsequently announced consumer refunds in 2024.

Relevance to reputation-based competition: A business that selectively displays favourable reviews may appear to offer superior quality even when its complete customer-feedback record is less favourable. This can undermine competitors that present feedback more accurately.

Key lesson: Reputation systems should be assessed for systematic bias, not just for whether the reviews they display are individually genuine. The matter primarily concerned consumer protection rather than a finding of dominance abuse.

Case 7: Multiversal Enterprises–Mammoth Properties, LLC v. Yelp, Inc. (2022)

Jurisdiction: United States — California Court of Appeal.

Facts: A restaurant operator challenged Yelp's statements concerning its review-filtering system, alleging that the system's claimed accuracy and reliability were misleading. The litigation addressed Yelp's filtering software, which sought to identify potentially unreliable or biased reviews.

Legal issue: Whether the evidence established that the challenged statements about Yelp's review filter were false or misleading.

Decision: The appellate court affirmed the judgment after trial, concluding that the evidence did not establish that the challenged statements were false or misleading.

Relevance to reputation-based competition: Reputation platforms need mechanisms to address fake, biased, and unreliable feedback. At the same time, claims about the performance of those mechanisms can be scrutinised under applicable law.

Key lesson: Competition and unfair-competition analysis must distinguish legitimate review moderation from deceptive manipulation. A filtering decision that disadvantages a business does not automatically establish unlawful discrimination or an antitrust violation.

These cases collectively illustrate that reputational advantages can arise from genuine quality, but also from misleading signals. They do not establish a single, universal antitrust doctrine of reputation-based competition; the applicable legal test depends on the jurisdiction and the conduct involved.

Case 8: Google Search (Shopping) — European Commission decision (2017), General Court judgment (2021), and Court of Justice judgment (2024)

Jurisdiction: European Union.

Facts: The European Commission found that Google had favoured its own comparison-shopping service in general search results while disadvantaging competing comparison-shopping services.

Legal issue: Whether a dominant platform's treatment of its own service could constitute an abuse of dominance under Article 102 TFEU.

Decision and principle: The Court of Justice upheld the General Court's judgment dismissing Google's challenge to the Commission's decision in September 2024.

Relevance to reputation-based competition: Search prominence is not identical to reputation, but it can shape perceived credibility, visibility, and customer acquisition. A platform that controls the gateway through which consumers discover businesses can influence which firms have the opportunity to build a reputation.

Key lesson: Where a platform's ranking and presentation practices favour its own services, the analysis must consider competitive effects, the platform's position, and the circumstances of the conduct. Self-preferencing is not automatically unlawful in every situation.

Case 9: United Brands Company v. Commission (1978)

Jurisdiction: European Communities.

Facts: The case concerned a major banana supplier's market position and several alleged abusive practices, including restrictions affecting distributors and trading partners.

Legal issue: The interpretation of dominance and the prohibition of abusive conduct under the predecessor to Article 102 TFEU.

Decision and principle: The Court of Justice established the enduring principle that dominance is a position of economic strength enabling an undertaking to behave to an appreciable extent independently of competitors, customers, and consumers. It also examined abusive practices in the context of the undertaking's market power.

Relevance to reputation-based competition: An established brand can be an important source of market power when consumers regard it as uniquely reliable or difficult to replace. Nevertheless, brand recognition alone does not prove dominance. Market definition, competitive constraints, entry barriers, and customer alternatives must also be examined.

Key lesson: Reputation can contribute to economic strength, but a legal finding of dominance requires a broader assessment of the market and the firm's ability to act independently of competitive pressure.

Case 10: Eastman Kodak Co. v. Image Technical Services, Inc. (1992)

Jurisdiction: United States Supreme Court.

Facts: Independent service organisations challenged Kodak's policies concerning access to replacement parts and servicing for Kodak equipment.

Legal issue: Whether a firm could possess market power in an aftermarket for parts and services despite competition in the primary equipment market.

Decision and principle: The Supreme Court held that the plaintiffs' allegations concerning aftermarket power and information costs could not be rejected categorically at the summary-judgment stage.

Relevance to reputation-based competition: Customers may purchase a product partly because of the manufacturer's reputation, installed base, or established service network. Once committed, they may face substantial switching costs or limited access to independent servicing.

Key lesson: A trusted brand's reputation can interact with lock-in, information asymmetry, and aftermarket restrictions. Competition analysis should consider whether customers can realistically switch and whether restrictions harm competitive alternatives.

Important qualification: The case did not establish that reputation alone creates unlawful market power. It concerned the interaction of market structure, information costs, and aftermarket competition.

5. Economic analysis of reputation-based competition

Reputation affects competition through both beneficial and potentially harmful mechanisms.

Two sides of reputation

Pro-competitive effects

Rewards genuine quality.

Reduces consumer search costs.

Encourages innovation and reliable service.

Helps new firms differentiate themselves.

Reduces uncertainty about product performance.

Potential anti-competitive effects

Artificial ratings and review manipulation.

Entrenchment of incumbent advantages.

Discriminatory ranking or certification.

Exclusionary restrictions on reputation portability.

Collusive manipulation of quality signals.

A. Reputation as an investment

Businesses often incur initial costs to establish a reliable reputation. They may invest in product testing, customer support, quality assurance, warranties, security, and after-sales services.

A reputation advantage earned through these investments can increase consumer welfare. If competition law penalised every successful brand for attracting loyal customers, it could weaken incentives to improve quality.

The legal concern is therefore not success itself, but whether a firm uses unlawful conduct to protect its reputation or prevent competitors from earning comparable trust.

B. Reputation as a barrier to entry

An established firm may enjoy accumulated ratings, repeat purchases, extensive customer testimonials, and strong recognition. A new competitor may offer an equally good or better product but lack a comparable record.

This can create a reputational barrier to entry, particularly where consumers rely heavily on historical ratings.

However, a reputational barrier is not necessarily unlawful. Authorities should examine whether it reflects legitimate customer experience or is reinforced by conduct such as exclusionary platform rules, discriminatory verification, or artificial switching costs.

C. Network effects and reputation concentration

On a digital platform, more users produce more reviews, and more reviews attract additional users. The resulting feedback loop can reinforce the platform's position.

A simplified mechanism is:

Larger user base

More ratings and feedback

Greater perceived reliability and visibility

More users and commercial transactions

Illustrative feedback loop. The loop can improve information quality, but it may also reinforce an entrenched platform.

Competition authorities should determine whether the feedback loop produces efficiencies or makes entry and expansion unreasonably difficult. Multi-homing, alternative discovery channels, data portability, and the availability of independent reviews can all affect the analysis.

D. Reputation manipulation and competitive harm

Manipulation can take several forms:

Review stuffing: Generating large volumes of fabricated positive ratings.

Review bombing: Coordinating negative feedback to damage a competitor.

Review suppression: Selectively hiding legitimate negative feedback.

Review hijacking: Improperly transferring ratings from one product to another.

Certification capture: Using control over a quality-assurance system to disadvantage competing suppliers.

Algorithmic reputational discrimination: Applying ranking or trust-scoring rules that systematically disadvantage rivals without adequate justification.

These practices may be actionable under consumer-protection, advertising, fraud, contract, or competition rules depending on their circumstances. An antitrust infringement generally requires additional analysis of the applicable prohibition and its elements.

6. Application across major industries

7. Legal assessment: a practical framework

A competition authority or court can evaluate a reputation-based dispute through the following steps.

Identify the relevant market. Determine the product, geographic, and, where necessary, platform or aftermarket dimensions of competition.

Identify the reputational mechanism. Establish whether the dispute concerns customer reviews, brand recognition, rankings, certification, endorsements, or a proprietary trust score.

Determine market power. Examine market shares, entry barriers, customer switching, network effects, multi-homing, and alternative sources of reputation information.

Establish the conduct. Distinguish genuine quality competition from fabrication, suppression, collusion, discriminatory access, or exclusionary restrictions.

Assess competitive effects. Consider prices, output, product quality, innovation, consumer choice, entry, and the ability of rivals to compete on the merits.

Examine objective justification. Review whether moderation, verification, ranking, or access restrictions are reasonably necessary to prevent fraud, protect consumers, or maintain system integrity.

Select a proportionate remedy. Address the proven harm without requiring platforms to publish every review, eliminate legitimate moderation, or guarantee identical reputational outcomes for all businesses.

8. Remedies and compliance measures

Appropriate remedies depend on the infringement established and the governing legal framework.

Transparency: Explain review collection, verification, moderation, ranking, and rating aggregation sufficiently to avoid misleading users.

Neutral moderation: Apply consistent standards to genuine positive and negative reviews.

Review portability: Where appropriate and technically feasible, allow businesses to transfer legitimate review histories between platforms without compromising verification or privacy.

Non-discriminatory access: Prevent unjustified exclusion from relevant rating, certification, or discovery systems.

Anti-manipulation controls: Detect fake reviews, review hijacking, coordinated attacks, and undisclosed incentives.

Independent audits: Examine whether ranking or scoring systems systematically disadvantage competing firms.

Competition compliance: Prohibit agreements among competitors to manipulate ratings, boycott rivals, or coordinate reputational attacks.

These measures should be evidence-based. Mandatory disclosure of proprietary algorithms or unrestricted access to reputation data may be disproportionate if less restrictive measures can address the identified harm.

9. Illustrative hypothetical

Suppose a dominant online marketplace operates its own delivery service and assigns trust scores to third-party sellers.

The marketplace gives its affiliated delivery service preferential placement, transfers positive ratings between unrelated products, and applies stricter verification requirements to independent sellers.

A competition authority would need to examine:

Whether the marketplace has substantial market power.

Whether its conduct departs from legitimate quality-control standards.

Whether independent sellers are materially disadvantaged.

Whether consumers receive misleading impressions of product or seller reliability.

Whether the conduct has exclusionary effects and lacks adequate objective justification.

If the evidence establishes exclusionary abuse under the applicable competition law, remedies might include neutral ranking criteria, accurate attribution of reviews, proportionate verification requirements, and monitoring.

If the evidence establishes only misleading reviews without the necessary antitrust elements, consumer-protection law may be the more appropriate route.

10. Conclusion

Reputation-based competition is an important dimension of modern competition law because consumer trust affects market entry, product differentiation, platform participation, and long-term commercial success.

The principal legal distinction is between reputation earned through superior performance and reputation maintained through unlawful manipulation or exclusion. Competition law should protect the ability of businesses to compete for trust while avoiding the punishment of legitimate brand success.

The authorities discussed above demonstrate several relevant principles: market power must be established rather than presumed from reputation; exclusionary conduct requires evidence and application of the appropriate legal test; and fabricated, selectively suppressed, or improperly transferred reviews may undermine fair market choices.

For examination purposes, the strongest conclusion is that reputation is neither inherently anti-competitive nor immune from regulation. Its legal significance depends on how it is created, communicated, protected, and used to influence competitive opportunities.

Note on authorities: The FTC matters involving Cure Encapsulations, Roomster, The Bountiful Company, and Hey Dude principally concern consumer protection, while the Yelp litigation concerns unfair competition and review systems. They should not be cited as findings of antitrust liability. The CMA's online-review investigation similarly illustrates consumer-protection enforcement rather than an established competition-law infringement.