Competition Ombudsman Roles in Digital Markets

1. Introduction

A Competition Ombudsman in digital markets can be understood as an independent institutional mechanism that receives complaints from businesses, consumers, developers, advertisers, platforms and other market participants concerning potentially anti-competitive conduct, facilitates information gathering, promotes early resolution, monitors compliance, and refers serious matters to the formal competition authority.

The term “Competition Ombudsman” is not a universally established statutory office in competition law. In many jurisdictions, similar functions are performed by competition authorities, sectoral regulators, designated digital-market regulators, complaint-handling bodies, or independent monitoring trustees.

Digital markets create a particularly strong rationale for such functions because:

• platforms can control access to essential digital ecosystems;
• network effects can rapidly strengthen market power;
• switching costs may be substantial;
• algorithms can change commercial conditions quickly;
• users and smaller businesses often have limited bargaining power;
• information necessary to prove exclusionary conduct is frequently controlled by the platform itself; and
• conventional litigation can take years while digital markets can tip within months.

The ombudsman therefore operates primarily as a front-line institutional interface between affected market participants and competition enforcement.

2. Meaning of a Competition Ombudsman

A Competition Ombudsman may be conceptualised as an institution performing five interconnected functions:

Complaint reception → preliminary assessment → investigation/monitoring → facilitated remedy → referral/enforcement

It should not ordinarily replace the competition authority or courts.

Its distinctive role is to make competition enforcement more accessible, faster, continuous and market-sensitive.

Traditional competition authority

A conventional competition authority generally:

• investigates infringements;
• conducts dawn raids and evidence gathering;
• defines relevant markets;
• determines dominance;
• imposes fines;
• orders behavioural or structural remedies.

Digital Competition Ombudsman

An ombudsman could additionally:

• receive complaints through simplified procedures;
• protect confidential complainant information;
• identify recurring platform practices;
• conduct preliminary market screening;
• monitor interoperability and access;
• identify discriminatory API treatment;
• examine sudden algorithmic changes;
• facilitate interim solutions;
• monitor compliance with remedies;
• refer systemic issues to the competition authority.

Thus, the ombudsman is principally a market-access and accountability mechanism, rather than an alternative competition court.

3. Why Digital Markets Require Ombudsman-Type Functions

A. Information asymmetry

Platforms often possess information concerning:

• ranking algorithms;
• recommendation systems;
• search-result changes;
• advertising auctions;
• pricing algorithms;
• API access;
• internal performance metrics;
• interoperability restrictions.

Small businesses normally cannot obtain this information independently.

An ombudsman can act as an institutional intermediary capable of escalating information requests to the competent authority.

B. Speed of digital competition problems

A conventional infringement procedure may take considerable time.

By contrast, a platform can:

• change an API;
• alter ranking criteria;
• impose a new commission;
• modify interoperability;
• suspend an account;
• change default settings

within days.

The economic effect can therefore occur before a final competition decision.

An ombudsman mechanism can provide early-warning and rapid-response capacity.

C. Platform dependency

A small business may technically be able to complain about a platform but fear retaliation.

Examples include:

• delisting;
• lower ranking;
• termination of an account;
• loss of advertising access;
• reduced API access;
• exclusion from an app store;
• deterioration of interoperability.

A credible ombudsman can provide confidential complaint channels and reduce the perceived cost of reporting.

4. Core Roles of a Competition Ombudsman

4.1 Complaint Reception

The first function is to provide a readily accessible mechanism through which affected parties can report suspected competition problems.

Complaints may concern:

• exclusion;
• self-preferencing;
• discriminatory access;
• tying;
• refusal to interoperate;
• excessive commissions;
• unfair ranking;
• data restrictions;
• exclusivity;
• platform parity obligations;
• algorithmic discrimination.

The ombudsman should distinguish between:

Individual disputes

Example:

A marketplace seller alleges that its account was unfairly suspended.

and

Systemic competition concerns

Example:

Thousands of sellers experience the same discriminatory ranking mechanism.

The second category is more directly relevant to competition enforcement.

5. 4.2 Early-Warning Function

A digital competition ombudsman can operate as an early-warning system.

Suppose numerous developers independently complain that:

an app store has introduced an API restriction that makes competing payment systems technically inferior.

Each complaint individually might appear commercially insignificant.

Collectively, however, the complaints could indicate:

• foreclosure;
• leveraging;
• discrimination;
• self-preferencing;
• interoperability degradation.

The ombudsman can aggregate these complaints and alert the competition authority.

6. 4.3 Market Monitoring

The ombudsman can continuously monitor:

• platform access conditions;
• commission structures;
• algorithmic ranking;
• interoperability;
• switching barriers;
• data portability;
• platform terms and conditions;
• exclusivity arrangements;
• changes in technical standards.

This is particularly important because digital competition is often dynamic rather than static.

7. 4.4 Facilitating Access to Essential Digital Infrastructure

Some digital infrastructures may become commercially indispensable.

Examples include:

• app stores;
• operating systems;
• cloud infrastructure;
• advertising exchanges;
• payment interfaces;
• dominant marketplaces;
• identity systems;
• interoperability interfaces.

An ombudsman can identify whether access conditions are:

• transparent;
• objectively justified;
• technically feasible;
• non-discriminatory;
• proportionate.

This connects the ombudsman function with the traditional essential-facilities doctrine.

8. 4.5 Algorithmic Accountability

Digital competition complaints increasingly involve algorithms.

An ombudsman may monitor:

• algorithmic ranking;
• personalised pricing;
• recommendation systems;
• automated account termination;
• dynamic commissions;
• search-result placement;
• advertising allocation.

The ombudsman does not necessarily need access to the entire source code.

It may instead require:

• audit logs;
• decision records;
• version histories;
• testing documentation;
• explanations of material changes;
• relevant outcome statistics.

This creates a form of competition auditability.

9. 4.6 Mediation

An ombudsman can sometimes resolve disputes without immediate formal infringement proceedings.

For example:

A platform refuses to provide an API to a smaller rival.

Possible mediated solutions could include:

• temporary API access;
• objective technical criteria;
• transparent eligibility requirements;
• independent verification;
• non-discriminatory access conditions.

Mediation is particularly useful where the issue is capable of quick correction and does not necessarily require a penalty.

However, mediation must not become a mechanism through which serious antitrust violations escape formal investigation.

10. 4.7 Referral to the Competition Authority

The ombudsman should possess a clearly defined referral mechanism.

A possible framework is:

Complaint

↓

Preliminary screening

↓

Individual dispute or systemic issue?

↓

Systemic issue

↓

Evidence gathering

↓

Urgent harm?

↓

Interim recommendation / referral

↓

Competition-authority investigation

↓

Final remedy

This division preserves institutional competence.

11. 4.8 Remedy Monitoring

After a competition authority imposes a remedy, the ombudsman could monitor whether it actually works.

For example, if a platform is ordered to provide:

• non-discriminatory access;
• interoperability;
• data portability;
• ranking transparency;

the ombudsman could receive subsequent complaints concerning non-compliance.

This is particularly valuable because formal compliance and economic compliance may differ.

A platform might technically comply with an order while designing a substitute mechanism that produces substantially the same exclusionary effect.

12. 4.9 Protection of Small Businesses

Digital platforms frequently function as infrastructure for:

• independent sellers;
• app developers;
• content creators;
• advertisers;
• publishers;
• freelancers;
• merchants;
• software providers.

An ombudsman can therefore act as a competition-access institution for dependent businesses.

This is especially important where an individual complainant lacks the resources to initiate expensive litigation.

13. 4.10 Confidentiality and Whistleblower Protection

A digital competition ombudsman should ideally permit confidential reporting.

Protection could cover:

• identity;
• commercially sensitive information;
• customer lists;
• technical documentation;
• pricing information;
• internal contracts.

Without such protection, businesses dependent upon dominant platforms may be reluctant to complain.

14. Relationship With Competition Authorities

The ombudsman should not become an independent competitor to the competition authority.

A suitable institutional architecture is:

This creates a multi-layered enforcement model.

15. Relevant Case Laws

Because there is no universally recognised “Competition Ombudsman” doctrine, the following cases illustrate the competition problems that an ombudsman-type institution would need to identify and address.

1. Google Search (Shopping) — European Commission / General Court

Google Search (Shopping), Case T-612/17

Google was found to have abused its dominant position by favouring its own comparison-shopping service in search results over competing comparison-shopping services.

The case is important for an ombudsman because complaints concerning:

• ranking;
• self-preferencing;
• visibility;
• discriminatory treatment;

may initially appear as technical platform decisions but can raise serious competition concerns.

Ombudsman relevance

An ombudsman could collect complaints from affected comparison-shopping services and identify a pattern of systematic self-preferencing before referring the matter for formal investigation.

2. Google Android — European Commission

Google Android, Case AT.40099

The European Commission addressed Google's conduct concerning Android, including restrictions involving manufacturers and mobile-app distribution.

The case demonstrates how control over an operating-system ecosystem can affect adjacent markets.

Ombudsman relevance

An ombudsman could monitor:

• licensing conditions;
• default arrangements;
• app distribution;
• interoperability;
• restrictions imposed on manufacturers.

It could therefore identify ecosystem-wide complaints rather than treating each contractual dispute separately.

3. Google Android Auto — European Commission

Google Android Auto, Case AT.40099-related proceedings concerning Android Auto

The European Commission addressed Google's refusal to allow certain applications to operate on Android Auto, ultimately accepting commitments designed to facilitate broader access.

Ombudsman relevance

This illustrates the importance of:

• interoperability;
• access conditions;
• technical interfaces;
• objective eligibility criteria.

An ombudsman could provide a mechanism through which developers report discriminatory or exclusionary access conditions.

4. Bundeskartellamt v Meta Platforms — Facebook Data Case

Bundeskartellamt, Facebook/Meta Platforms decision, B6-22/16

The German competition authority examined the relationship between Facebook's market power and its collection and combination of user data from different sources.

The case is significant because competition problems can arise from the interaction between:

• market power;
• data;
• privacy conditions;
• user choice.

Ombudsman relevance

A digital competition ombudsman could receive complaints concerning:

• compulsory data combination;
• inability to meaningfully choose;
• discriminatory data-access conditions;
• platform dependency.

The case also demonstrates that digital competition issues may overlap with data-protection regulation.

5. Amazon Marketplace — European Commission

Amazon Marketplace, Case AT.40462

The European Commission examined Amazon's use of non-public marketplace seller data and its potential impact on competition.

The subsequent commitments addressed Amazon's treatment of seller data and the design of its marketplace processes.

Ombudsman relevance

A marketplace ombudsman could monitor:

• use of seller data;
• access to marketplace information;
• conflicts between platform and merchant;
• platform-owned competing products;
• ranking and selection mechanisms.

This illustrates why an intermediary complaint institution may be particularly useful for dependent marketplace sellers.

6. Apple App Store — European Commission

Apple App Store Practices, including music-streaming and related proceedings

The Commission examined Apple's conditions governing distribution of apps and the use of its payment infrastructure, particularly in relation to competing music-streaming services.

The dispute illustrates the competitive importance of:

• app-store commissions;
• payment restrictions;
• anti-steering rules;
• platform access conditions.

Ombudsman relevance

An ombudsman could provide a simplified channel for developers to report:

• payment restrictions;
• discriminatory commissions;
• anti-steering provisions;
• technical barriers;
• unequal treatment between platform-owned and independent services.

7. Microsoft — Internet Explorer

European Commission v Microsoft, Case T-201/04

The Microsoft litigation concerning Windows and Internet Explorer addressed the relationship between a dominant operating-system platform and an adjacent application market.

Although predating the modern platform economy, it is highly relevant to digital-market ombudsman functions.

Ombudsman relevance

The case demonstrates the recurring competition problem of leveraging control over one digital layer into another market.

An ombudsman should therefore monitor:

operating system → browser → application ecosystem

and analogous modern relationships such as:

operating system → app store → payment service.

8. Microsoft — Interoperability Information

Microsoft Corp. v Commission, Case T-201/04 and related proceedings

The Microsoft litigation also concerned access to interoperability information necessary for competing products to interact with Microsoft's systems.

Ombudsman relevance

It demonstrates why an ombudsman could be useful in monitoring:

• interoperability;
• technical documentation;
• API access;
• compatibility;
• discriminatory technical conditions.

The underlying principle has considerable relevance to contemporary cloud, AI and platform ecosystems.

16. Lessons From the Case Law

The cases collectively reveal several recurring patterns.

Pattern 1 — Ranking can become a competition issue

Google Shopping

→ algorithmic visibility
→ self-preferencing
→ foreclosure concerns.

Pattern 2 — Operating-system control can affect adjacent markets

Microsoft / Google Android

→ platform control
→ ecosystem restrictions
→ leveraging.

Pattern 3 — Data can become a competitive resource

Meta / Facebook

→ data aggregation
→ user dependency
→ competition and privacy interaction.

Pattern 4 — Marketplace information creates conflicts

Amazon

→ platform receives seller information
→ platform also competes with sellers
→ potential competitive concerns.

Pattern 5 — Technical access can determine market participation

Android Auto / Microsoft interoperability

→ technical interface
→ access to users
→ competition in downstream markets.

17. Ombudsman and Essential-Facilities Problems

A particularly important role arises where a platform controls infrastructure that rivals need.

The ombudsman can ask:

1. Is the facility controlled by a dominant undertaking?
2. Is access commercially important?
3. Is duplication realistically possible?
4. Is refusal capable of excluding competition?
5. Are access conditions transparent?
6. Are similarly situated firms treated equally?
7. Is the restriction objectively justified?

This does not mean every important digital platform automatically becomes an essential facility.

The traditional competition-law requirements remain relevant.

18. Ombudsman and Self-Preferencing

A digital ombudsman can establish a specialised complaint process for self-preferencing.

For example:

Platform owns Service A and operates Marketplace B.

If Service A repeatedly receives:

• superior ranking;
• preferential search placement;
• cheaper access;
• privileged data;
• faster APIs;

competitors could submit complaints.

The ombudsman could compare:

Platform-owned service

versus

Independent service

using objective criteria.

This can generate evidence for formal competition proceedings.

19. Ombudsman and Algorithmic Collusion

An ombudsman could also serve as an early-warning institution for algorithmic coordination.

Potential indicators include:

• parallel automated price increases;
• shared optimisation systems;
• common pricing software;
• coordinated API signals;
• unusually stable pricing;
• algorithmic responses to competitors.

However, parallel algorithmic outcomes alone do not necessarily establish an antitrust infringement.

The ombudsman would therefore collect evidence rather than automatically characterise algorithmic behaviour as unlawful collusion.

20. Ombudsman and AI Markets

The role becomes even more significant in AI markets.

Possible complaints include:

Foundation-model access

• discriminatory API access;
• preferential computing resources;
• restrictions on downstream competitors.

Cloud infrastructure

• technical switching barriers;
• data-transfer costs;
• interoperability restrictions.

AI marketplaces

• ranking manipulation;
• self-preferencing;
• exclusion of rival models.

AI agents

• agent-controlled purchasing restrictions;
• automated exclusivity;
• algorithmic discrimination.

Data

• exclusive access to strategically important datasets;
• discriminatory data licensing.

An ombudsman can therefore become a continuous monitoring interface for AI competition.

21. Institutional Independence

A credible digital competition ombudsman should possess:

Independence

It should not be controlled by the platform it monitors.

Technical expertise

Staff should understand:

• algorithms;
• cloud architecture;
• APIs;
• cybersecurity;
• data governance;
• platform economics.

Confidentiality

Businesses must be able to complain without unreasonable retaliation risks.

Referral powers

Serious matters should be capable of being transferred to the competition authority.

Data-access powers

Where legally authorised, the institution should obtain relevant technical and commercial information.

22. Limits of the Ombudsman

An ombudsman should not become a substitute for judicial or competition enforcement.

Important limitations include:

1. No automatic finding of infringement

A complaint is not proof of an antitrust violation.

2. No arbitrary regulation

Interventions must have a legal basis.

3. Due process

Platforms must have an opportunity to respond.

4. Confidentiality

Commercially sensitive information must be protected.

5. Avoidance of regulatory duplication

The ombudsman should coordinate with:

• competition authorities;
• data-protection authorities;
• telecommunications regulators;
• consumer-protection agencies.

6. No over-enforcement

Not every platform disagreement represents a competition problem.

23. Proposed Digital Competition Ombudsman Model

A comprehensive institutional structure could be:

Complaint Portal

↓

Confidential Intake

↓

Preliminary Competition Screening

↓

Technical Assessment

↓

Market-Wide Pattern Detection

↓

Urgent Harm Assessment

↓

Mediation / Voluntary Correction

↓

Compliance Monitoring

↓

Referral to Competition Authority

↓

Formal Investigation

↓

Remedy

↓

Ombudsman Compliance Monitoring

This produces a continuous enforcement cycle rather than a purely reactive infringement model.

24. Difference Between Ombudsman and Competition Authority

25. Key Legal Principles

The competition ombudsman concept should be built around six principles:

1. Accessibility

Affected businesses should have an easy way to report competitive problems.

2. Independence

The institution must be structurally independent from dominant platforms.

3. Technical competence

Digital competition requires technological expertise alongside conventional legal expertise.

4. Evidence preservation

Algorithmic logs, API records and ranking changes should be capable of preservation and examination.

5. Rapid intervention

Urgent competitive harm should be capable of escalation.

6. Institutional coordination

Competition, privacy, consumer, telecommunications and AI regulators must cooperate.

26. Conclusion

The Competition Ombudsman in digital markets can be conceptualised as a front-line competition governance mechanism rather than a replacement for a competition authority.

Its principal contribution is to close the gap between market participants experiencing digital exclusion and institutions possessing formal enforcement powers.

The case law involving Google Shopping, Google Android, Android Auto, Meta/Facebook, Amazon Marketplace, Apple App Store and Microsoft demonstrates recurring problems involving self-preferencing, interoperability, data, app-store access, marketplace dependency and ecosystem leveraging.

The most significant potential functions are therefore:

1. complaint reception;
2. early-warning detection;
3. market monitoring;
4. algorithmic and technical oversight;
5. interoperability monitoring;
6. mediation;
7. confidential whistleblower protection;
8. referral to competition authorities;
9. remedy monitoring; and
10. protection of competitive access for smaller digital businesses.

In increasingly concentrated digital and AI ecosystems, the ombudsman model can provide an institutional bridge between individual platform grievances and systemic competition enforcement, while preserving the competition authority's ultimate responsibility for determining infringements and imposing legally authorised remedies.