Competition Law and Public Platform Market Power

Introduction

Public platform market power arises where a platform operated, controlled, licensed, or otherwise supported as public-facing infrastructure becomes an important gateway through which businesses, consumers, developers, or service providers must interact with a market.

Examples include:

• public digital marketplaces;
• government-backed procurement platforms;
• public transport or mobility platforms;
• public payment and identity infrastructures;
• public data exchanges;
• public utilities and infrastructure portals;
• digital public infrastructure;
• public-facing app or service platforms; and
• platforms through which access to an essential public service is organized.

Competition law is concerned not merely with whether a platform is large, but whether its control over access, data, interoperability, ranking, pricing, participation, or downstream transactions enables it to restrict competition.

The central issues are therefore dominance, network effects, access discrimination, self-preferencing, leveraging, tying, exclusionary conduct, interoperability, and essential-facility considerations.

1. Meaning of Public Platform Market Power

A platform generally performs an intermediary function between different groups.

For example:

Consumers ↔ Platform ↔ Sellers

or:

Developers ↔ Platform ↔ Users

A public platform may have particularly strong competitive significance because participation can become practically unavoidable where:

1. the platform has a very large user base;
2. public authorities require or strongly encourage its use;
3. network effects make alternative platforms less attractive;
4. the platform controls essential data;
5. interoperability with competing platforms is restricted;
6. switching costs are high;
7. access to public infrastructure is mediated through the platform; or
8. the platform itself competes with businesses dependent upon it.

Market power can therefore exist even where the platform does not charge users a monetary price.

2. Legal Framework

A. Relevant Market

The first question is normally:

What market is affected by the platform's conduct?

Relevant markets may be defined according to:

• product or service;
• geographic scope;
• user group;
• platform function;
• transaction type; and
• supply-side substitutability.

Digital platforms can require multiple relevant markets because they serve different groups simultaneously.

For example:

• platform intermediation;
• app distribution;
• online advertising;
• payment services;
• data services; and
• downstream products.

The Indian Google Android litigation illustrates this multi-market approach. The CCI identified separate markets for licensable mobile operating systems, app stores, general web search, mobile browsers and online video hosting.

3. Determining Platform Dominance

Dominance is not established merely by market share.

Relevant considerations include:

1. Market share

A consistently high market share may indicate substantial market power.

2. Network effects

Platforms become more valuable as more users and participants join.

This can create a feedback loop:

More users → more sellers → greater platform attractiveness → more users.

The CCI has specifically recognised network effects as an important source of market power in online marketplaces.

3. Switching costs

Users may remain dependent because changing platforms involves:

• data migration;
• loss of reputation;
• loss of transaction history;
• retraining;
• incompatible software; or
• loss of network connections.

4. Data advantages

Large platforms may accumulate transaction, consumer, behavioural and business data that competitors cannot easily reproduce.

5. Entry barriers

Entrants may face:

• infrastructure costs;
• technological barriers;
• regulatory requirements;
• network effects;
• data disadvantages;
• interoperability barriers; and
• customer-acquisition costs.

6. Countervailing buyer power

Large suppliers or users may be able to resist platform conditions. Small businesses and individual consumers usually have less bargaining power.

4. Why Public Platforms Can Create Special Competition Concerns

A conventional private platform may compete against another private platform.

A public platform can present an additional problem:

The platform may simultaneously control access to an ecosystem and influence the competitive conditions within that ecosystem.

This creates a potential conflict between:

Platform operator + gatekeeper + rule-maker + market participant.

For example, a public procurement platform could potentially:

• favour particular suppliers;
• manipulate rankings;
• impose discriminatory participation requirements;
• restrict access to data;
• make interoperability difficult;
• impose excessive transaction fees; or
• use information obtained from participants to compete against them.

Competition law therefore examines whether platform governance is neutral, transparent, non-discriminatory and competitively open.

5. Major Competition Concerns

A. Self-Preferencing

Self-preferencing occurs when a platform gives preferential treatment to its own products or services.

Possible mechanisms include:

• higher search rankings;
• preferential visibility;
• preferential access to consumers;
• better algorithmic treatment;
• preferential data access; or
• lower platform fees.

The concern becomes particularly serious where competitors depend upon the platform to reach customers.

B. Discriminatory Access

A dominant platform may provide:

• favourable access to itself;
• ordinary access to some competitors; and
• inferior or no access to others.

Competition authorities may examine whether differences are objectively justified.

C. Refusal of Access

A dominant platform may refuse access to:

• APIs;
• data;
• interoperability interfaces;
• payment infrastructure;
• technical standards;
• databases; or
• other platform functionality.

The traditional essential facilities doctrine is relevant, although courts generally avoid requiring dominant firms to share infrastructure merely because sharing would benefit competitors.

The modern digital-platform context has nevertheless caused courts to examine the doctrine more flexibly.

6. Six Important Case Laws

1. Bronner v Mediaprint

Case: Oscar Bronner GmbH & Co. KG v Mediaprint Zeitungs und Zeitschriftenverlag GmbH, C-7/97

This is the leading European authority on refusal to provide access to infrastructure.

The Court established stringent conditions before a dominant undertaking can be compelled to provide access to infrastructure.

The reasoning emphasised:

• protection of property rights;
• freedom of contract;
• incentives for investment;
• indispensability; and
• absence of a realistic alternative.

Significance

For public platforms, the case establishes an important principle:

Market importance alone does not automatically make a platform an essential facility.

The competition authority must carefully examine whether access is genuinely indispensable and whether forcing access would undermine legitimate investment incentives.

7. Google Android Auto / Alphabet v AGCM

Case: Alphabet Inc. and Google LLC v Autorità Garante della Concorrenza e del Mercato, C-233/23

This case is particularly important for digital platforms.

Google's Android Auto platform allowed certain categories of third-party applications to operate through vehicle infotainment systems. Enel X sought interoperability for its electric-vehicle charging application.

The CJEU distinguished the situation from the traditional Bronner circumstances.

Where infrastructure is developed with third-party use in mind, the stringent Bronner indispensability test does not necessarily apply in the same way.

Competition significance

The case demonstrates that:

• interoperability can be central to digital competition;
• digital platforms can function as gateways;
• refusal to interoperate may restrict downstream competition;
• the characteristics of the platform matter; and
• objective justification must be examined.

It is therefore highly relevant to public platform interoperability.

8. Google Shopping

Case: Google Search (Shopping), European Commission / General Court proceedings

The Google Shopping litigation concerned Google's treatment of its comparison-shopping service within its general search results.

The competition concern was not simply that Google was dominant in search.

The critical issue was whether Google used that position to provide preferential treatment to its own comparison-shopping service while disadvantaging competing comparison-shopping services.

Significance

The case demonstrates the importance of:

• ranking algorithms;
• visibility;
• search neutrality;
• self-preferencing;
• platform gatekeeping; and
• leveraging of dominance.

For public marketplaces, algorithmic ranking can therefore become a competition-law issue where the operator also participates in the market.

9. Google Android — CCI

Case: Umar Javeed & Ors. v Google LLC & Anr.

The CCI examined Google's Android ecosystem and its control over Android and associated services.

The CCI considered factors including:

• Google's control over Android;
• Google's market position;
• network effects;
• entry barriers;
• consumer dependence;
• app availability;
• Google's resources; and
• absence of sufficient countervailing power. 

The CCI ultimately treated Google's position in relevant Android-related markets as dominant.

Competition significance

The case demonstrates how platform power can arise from an ecosystem rather than from one isolated product.

A platform may strengthen its position through:

operating system → app store → applications → users → developers → data → further users.

10. Google Android — European Union

Case: Google LLC and Alphabet Inc. v European Commission, T-604/18

The EU proceedings concerned contractual restrictions associated with Google's Android ecosystem.

The Commission examined arrangements involving:

• Google Play;
• Google Search;
• mobile applications;
• device manufacturers; and
• restrictions affecting competing services.

The General Court largely upheld the Commission's findings while modifying part of the penalty.

Competition significance

The case demonstrates the risks of:

• tying;
• exclusivity;
• leveraging;
• contractual restrictions; and
• ecosystem-based foreclosure.

It is particularly relevant where a public platform operator controls one layer of infrastructure and uses that control to influence another market.

11. Flipkart Internet / Amazon–Flipkart Marketplace Investigation

Case: Flipkart Internet Pvt. Ltd. v Competition Commission of India

The CCI examined allegations involving online marketplace practices concerning:

• exclusive launches;
• preferred sellers;
• discounting; and
• preferential listing or promotion of private labels.

The CCI recognised that network effects can contribute significantly to platform market power.

Significance

The case is important because it illustrates that marketplace power may arise from:

users + sellers + network effects + platform data + ranking mechanisms.

The same analytical framework can apply to public marketplaces where the platform has a substantial gatekeeping function.

12. Google Play Store / UPI — CCI

Case: XYZ/Google-related proceedings concerning Google Play Store and UPI

The CCI examined Google's position in the Android ecosystem and its relationship with app developers and payment services.

The Commission found that requiring developers to use Google's payment-processing system as a condition of access to the Play Store could affect competition and market access.

Significance

The case illustrates leveraging:

Dominance in Platform A → contractual control → protection or expansion into Platform/Market B.

For a public platform, analogous conduct could involve conditioning access to one public infrastructure service upon acceptance of unrelated commercial conditions.

13. Public Platform and Essential-Facility Doctrine

The essential-facility analysis can be represented as follows:

Dominant Platform       ↓ Controls Important Infrastructure       ↓ Competitor Requests Access       ↓ Is Access Indispensable?       ↓ Are Alternatives Realistically Available?       ↓ Would Refusal Exclude Competition?       ↓ Is There an Objective Justification?       ↓ Competition-Law Assessment

The Google Android Auto judgment is particularly significant because it explains why the traditional Bronner test cannot automatically be transplanted to every digital-platform interoperability dispute.

14. Public Platform and Self-Preferencing

A public platform should ideally separate:

Platform function

from

Commercial participation.

Where the platform itself competes with participants, competition concerns may arise if it can use its regulatory or infrastructural position to advantage its own commercial operations.

Potential examples include:

• preferential ranking;
• privileged data access;
• discriminatory fees;
• exclusive APIs;
• preferential authentication;
• preferential interoperability;
• discriminatory search results; and
• preferential procurement information.

15. Data as a Source of Public Platform Power

Data can become a strategic competitive asset.

A public platform may accumulate:

• transaction data;
• customer data;
• supplier information;
• pricing information;
• demand forecasts;
• usage patterns;
• performance statistics; and
• business-sensitive information.

A competition concern can arise if the platform uses non-public participant data to compete against the very businesses that supplied that information.

This can produce an important structural problem:

The platform knows the market because it operates the infrastructure through which the market functions.

16. Interoperability

Interoperability is particularly important where several platforms need to communicate.

Competition concerns may arise from:

• API denial;
• incompatible technical standards;
• discriminatory API access;
• excessive access fees;
• delayed technical integration;
• refusal to recognize competing credentials; and
• restrictions on data portability.

The Google Android Auto case demonstrates how interoperability can become an Article 102 TFEU issue when the dominant platform has created an infrastructure intended to accommodate third-party services.

17. Network Effects and Entrenchment

Public platforms can experience positive network effects:

More users     ↓ More suppliers     ↓ More transactions     ↓ More data     ↓ Better platform functionality     ↓ More users

This can produce market entrenchment.

However, network effects are not automatically anti-competitive.

The legal question is whether the platform uses network effects to:

• exclude competitors;
• prevent switching;
• foreclose entrants;
• discriminate against participants; or
• extend dominance into adjacent markets.

18. Competition-Neutral Governance

A public platform should ideally have rules addressing:

Access

Transparent eligibility criteria.

Pricing

Non-discriminatory and objectively justified fees.

Ranking

Transparent and consistently applied ranking principles.

Data

Clear separation between platform data and commercially sensitive participant data.

Interoperability

Reasonable technical access for competing services.

Governance

Independent and transparent decision-making.

Complaints

Effective mechanisms for challenging discriminatory treatment.

Conflicts of interest

Separation between platform administration and commercial activity.

19. Remedies

Competition authorities may consider several remedies.

Structural remedies

In exceptional circumstances:

• separation of platform and commercial activities;
• divestiture;
• functional separation; or
• creation of independent governance structures.

Behavioural remedies

More commonly:

• non-discriminatory access;
• interoperability;
• API access;
• data portability;
• prohibition of self-preferencing;
• transparent ranking;
• fair access terms;
• restrictions on tying; and
• monitoring obligations.

Procedural remedies

These may include:

• independent audits;
• algorithmic transparency;
• compliance reporting;
• dispute-resolution mechanisms; and
• periodic competition assessments.

20. Public Platform Market Power — Competition-Law Test

A useful analytical framework is:

21. Indian Competition-Law Position

Under the Competition Act, 2002, the principal provisions are:

• Section 3 — anti-competitive agreements;
• Section 4 — abuse of dominant position;
• Section 19 — inquiry and relevant-market/dominance assessment;
• Section 26 — investigation procedure;
• Section 27 — orders following abuse of dominant position;
• Section 33 — interim orders; and
• Section 36 — CCI's procedural powers.

Section 4 is particularly relevant where a platform:

• imposes unfair conditions;
• imposes discriminatory conditions;
• limits or restricts markets;
• denies market access;
• uses dominance in one market to enter/protect another; or
• uses contractual restrictions that affect competition.

The CCI's Google cases demonstrate the application of these concepts to platform ecosystems.

22. Distinguishing Legitimate Platform Governance from Abuse

Not every platform rule violates competition law.

A platform may legitimately establish:

• security standards;
• technical standards;
• privacy requirements;
• fraud-prevention systems;
• quality standards;
• safety requirements;
• authentication requirements; and
• reasonable interoperability limitations.

The competition issue arises when restrictions are unnecessary, discriminatory, exclusionary, disproportionate, or designed to protect the platform's own competitive position.

Therefore:

Platform power is not itself unlawful; abuse of substantial market power can be.

23. Key Principles Emerging from the Case Law

The six principal lines of authority above establish several important propositions:

1. Market share alone is insufficient; network effects and entry barriers matter.
2. Digital ecosystems can generate substantial market power.
3. Control over a platform gateway can affect downstream competition.
4. Self-preferencing can raise competition concerns where platform control affects rival access.
5. Interoperability can be competitively significant.
6. Refusal of access requires careful assessment of indispensability and objective justification.
7. Dominance in one market can potentially be leveraged into another.
8. Contractual restrictions can reinforce platform dominance.
9. Data can become an important source of competitive advantage.
10. Public-platform governance requires particular attention to neutrality and non-discrimination.

Conclusion

Public platform market power represents a convergence of traditional competition-law principles and modern platform economics.

The central competition-law problem is not simply that a public platform becomes large. The deeper concern arises when the platform becomes a gatekeeper for access to a market and can use control over infrastructure, users, data, algorithms, interoperability or contractual terms to influence competitive conditions.

The principal case-law lessons from Bronner, Google Shopping, Google Android, Google Android Auto, the Indian Android/Play Store proceedings, and the Amazon–Flipkart marketplace litigation show the importance of examining market definition, network effects, access, interoperability, self-preferencing, leveraging, discrimination and objective justification.