1. Introduction

Avatar ecosystem platforms are digital environments in which users interact through persistent or semi-persistent digital representations of themselves—avatars, virtual characters, digital identities, or AI-generated personas. These ecosystems can combine:

• avatar creation and identity;
• virtual worlds and metaverse spaces;
• social networking;
• messaging and communication;
• virtual goods and currencies;
• gaming;
• creator economies;
• advertising;
• virtual events;
• digital marketplaces;
• VR/AR hardware;
• app stores and developer platforms; and
• AI-powered social agents.

From a competition-law perspective, the important issue is not the avatar itself but control over the ecosystem through which users create identities, communicate, discover content, transact, and interact with other users.

A dominant operator could potentially control several layers simultaneously:

Hardware → Operating system → Avatar identity → Social graph → App store → Virtual goods → Payments → Advertising → Data → Content discovery

Such vertical integration can create substantial network effects, switching costs, interoperability barriers, self-preferencing opportunities and exclusionary risks.

The legal principles below draw on established antitrust cases concerning social networks, digital platforms, app stores, interoperability, tying, self-preferencing and two-sided markets.

2. Meaning of an Avatar Ecosystem Platform

An avatar ecosystem platform may perform several functions simultaneously.

A. Identity layer

The platform may control:

• avatar registration;
• usernames;
• biometric or facial representation;
• reputation;
• social identity;
• digital possessions;
• authentication.

The more valuable an avatar identity becomes, the more difficult it may become for a user to leave the ecosystem.

B. Social-interaction layer

Users may use avatars to:

• communicate;
• attend virtual events;
• form groups;
• play games;
• conduct business;
• attend education or conferences;
• interact with AI agents.

C. Marketplace layer

Users may purchase:

• clothing for avatars;
• virtual property;
• skins;
• accessories;
• experiences;
• subscriptions;
• virtual currencies.

D. Developer layer

Third-party developers may create:

• avatar accessories;
• virtual environments;
• games;
• social experiences;
• AI agents;
• applications;
• digital goods.

Consequently, the platform can become an ecosystem intermediary between users, developers, advertisers and merchants.

3. Relevant Competition-Law Issues

I. Market Definition

The first question is whether the relevant market is:

1. social networking;
2. virtual-world services;
3. avatar platforms;
4. VR platforms;
5. virtual goods marketplaces;
6. social-gaming platforms;
7. app distribution;
8. digital identity services; or
9. a broader multi-sided ecosystem.

This is important because a platform may appear to face substantial competition if the market is defined broadly, while it may possess significant market power if a narrower market is appropriate.

The U.S. Supreme Court's decision in Ohio v. American Express Co. is particularly relevant to platform economics because it emphasized the relationship between different sides of a transaction platform and indirect network effects.

However, an avatar social network is not automatically equivalent to a transaction platform. Market definition depends on the actual competitive relationships and the conduct being examined.

4. Network Effects

Avatar ecosystems can exhibit powerful direct and indirect network effects.

For example:

More users → more social connections → more creators → more content → more attractive ecosystem → more users.

A new entrant may therefore have difficulty competing even if it has technically superior avatar technology.

The FTC's litigation against Meta illustrates the importance of network effects and switching costs in personal social networking. The FTC has alleged that users accumulate connections and social histories that make migration difficult and that network effects can protect an incumbent from entry.

For avatar ecosystems, switching costs can be even greater because users may accumulate:

• friends;
• followers;
• avatar designs;
• virtual possessions;
• reputation;
• achievements;
• transaction history;
• creator relationships;
• social memories.

5. Avatar Lock-In and Switching Costs

A platform may technically permit users to create accounts elsewhere while making it practically difficult to reproduce their ecosystem.

For example:

Platform A

Avatar + friends + followers + virtual property + reputation + purchases

versus

Platform B

New avatar + no friends + no history + no reputation + limited compatible content.

This creates a potential ecosystem lock-in problem.

Competition authorities may therefore examine:

• portability;
• interoperability;
• identity transfer;
• social-graph portability;
• avatar portability;
• digital-goods portability;
• cross-platform communication.

The FTC's Facebook litigation has specifically highlighted high switching costs and network effects as potential barriers to entry in social networking.

6. Interoperability and Access Restrictions

A particularly important competition issue is whether an avatar platform permits competitors to interoperate with its ecosystem.

Possible restrictions include:

• refusing API access;
• blocking third-party avatars;
• preventing cross-platform messaging;
• restricting identity portability;
• preventing external virtual goods from functioning;
• blocking competing social applications;
• limiting access to user interfaces.

The legal treatment of refusal to provide access depends heavily upon the circumstances.

The EU's Android Auto judgment is especially significant for digital ecosystems. The Court of Justice held that the strict Bronner conditions associated with refusal to provide access to infrastructure do not automatically apply where infrastructure was developed with third-party use in mind.

This is highly relevant to an avatar platform deliberately designed as an ecosystem for third-party applications.

7. Self-Preferencing

An avatar-platform operator may compete with developers while simultaneously controlling the platform on which those developers depend.

For example:

Platform owns avatar marketplace + third-party avatar sellers compete on marketplace.

The platform could allegedly favor:

• its own avatar clothing;
• its own virtual worlds;
• its own AI agents;
• its own games;
• its own payment system.

This creates a potential vertical foreclosure/self-preferencing issue.

The classic European comparison is Google Shopping, where the European Commission found that Google favored its own comparison-shopping service in search results while demoting competing services.

The same legal theory could potentially become relevant where an avatar platform controls discovery and systematically privileges its own competing products.

8. Tying and Bundling

Suppose an operator controls:

• VR headset;
• operating system;
• avatar system;
• social network;
• virtual marketplace.

It might bundle these products together.

Examples could include:

Headset → mandatory proprietary avatar identity

or

Avatar account → mandatory proprietary payment system

or

Social-world access → compulsory use of platform virtual currency.

The competition-law question would be whether such arrangements unlawfully leverage power from one market into another.

9. App-Store and Distribution Control

An avatar ecosystem may have its own app store.

The operator could control:

• admission;
• ranking;
• commissions;
• payment mechanisms;
• API access;
• advertising;
• discoverability;
• updates;
• technical standards.

This makes app-store regulation directly relevant.

In Epic Games v. Apple, the Ninth Circuit considered Apple's App Store restrictions, including anti-steering rules and the competitive position of alternative distribution channels.

For avatar ecosystems, analogous concerns could arise if an operator prevents developers from telling users about:

• competing avatar marketplaces;
• alternative payment systems;
• competing virtual worlds;
• external social platforms.

10. Control Over Social Discovery

Platform algorithms may determine:

• which avatars users see;
• which virtual spaces become popular;
• which creators receive exposure;
• which virtual goods are recommended;
• which social interactions are promoted.

This can create algorithmic gatekeeping power.

A platform may therefore influence competition without explicitly prohibiting competitors.

For example:

Competitor's avatar products remain technically available but are systematically made difficult to discover.

This resembles the competitive concerns considered in self-preferencing cases such as Google Shopping.

11. Data Advantages

Avatar ecosystems may generate unusually rich data, including:

• movement;
• gaze;
• voice;
• gestures;
• social relationships;
• purchasing behavior;
• virtual-world activity;
• interaction patterns;
• emotional or behavioral signals.

A dominant platform could potentially use ecosystem-generated data to improve its own competing products.

Competition analysis may therefore examine whether exclusive access to data creates:

• entry barriers;
• discriminatory access;
• informational advantages;
• foreclosure;
• discriminatory ranking;
• exclusion of competing developers.

12. Case Law

1. FTC v. Meta Platforms, Inc. — Facebook

Jurisdiction: United States
Area: Social networking, monopolization, acquisitions, APIs

The FTC alleges that Meta maintained monopoly power in personal social networking through acquisitions including Instagram and WhatsApp and through restrictions on access to Facebook APIs. The litigation remains significant because it directly addresses network effects, switching costs, social graphs and platform interoperability.

Relevance to avatar ecosystems

An avatar ecosystem could similarly acquire potential competitors or restrict interoperability with competing social services.

The case demonstrates that competition analysis may look beyond the immediate product and examine whether conduct protects an ecosystem's network effects.

2. FTC v. Meta Platforms, Inc. — Within Unlimited

Jurisdiction: United States
Area: VR, acquisitions, ecosystem control

The FTC challenged Meta's proposed acquisition of Within Unlimited, developer of the VR fitness application Supernatural.

The FTC emphasized that Meta was vertically present at several levels:

• VR hardware;
• app distribution;
• VR applications;
• content development.

The agency argued that Meta's control over the Quest platform and its ability to promote its own applications could make competition in VR fitness more difficult.

The FTC's complaint specifically described Meta's position across hardware, app distribution and applications and its access to VR user data and app-discovery mechanisms.

Relevance

This is particularly close to an avatar ecosystem because it involves VR + hardware + app store + applications + user data.

3. Ohio v. American Express Co.

U.S. Supreme Court, 2018

Area: Two-sided platforms and market definition

The Supreme Court treated American Express as a two-sided transaction platform and emphasized indirect network effects between merchants and cardholders.

Relevance

Avatar ecosystems may similarly contain interconnected user groups:

Users ↔ creators ↔ advertisers ↔ developers ↔ merchants.

However, courts must determine whether the particular ecosystem actually operates as the type of two-sided transaction platform addressed in American Express.

4. Epic Games, Inc. v. Apple Inc.

Ninth Circuit, 2023

Area: App stores, distribution restrictions, anti-steering

The case concerned Apple's App Store ecosystem and restrictions affecting alternative distribution and communication with users. The Ninth Circuit addressed Epic's standing and competitive-distribution arguments concerning alternative channels and Apple's anti-steering restrictions.

Relevance

An avatar ecosystem could raise similar questions where the platform operator:

• controls the marketplace;
• controls payments;
• prevents alternative payment options;
• restricts developer communication;
• prevents users from discovering competing platforms.

5. United States v. Microsoft Corp.

D.C. Circuit, 2001

Area: Network effects, platform power, exclusionary conduct

Microsoft is a foundational platform-competition case involving operating-system dominance, network effects and conduct designed to protect the incumbent ecosystem from competitive threats.

Economic analysis of the case has emphasized how network effects and application ecosystems could create substantial barriers to entry.

Relevance

An avatar platform can similarly become more valuable as:

users → developers → applications → content → users

reinforce one another.

Thus, exclusion of competing applications or interoperability can potentially protect ecosystem power.

6. Google Shopping — European Commission

European Commission, 2017

Area: Dominance and self-preferencing

The Commission found that Google systematically favored its own comparison-shopping service in search results while demoting competing comparison-shopping services.

Relevance

The principle is relevant where an avatar ecosystem controls the principal discovery mechanism for virtual content.

Potential examples include:

• ranking the platform's own avatars above competitors;
• preferentially featuring its own virtual worlds;
• giving its own AI agents greater visibility;
• suppressing competing avatar marketplaces.

The precise legal analysis would depend upon market power, effects, justification and the applicable jurisdiction.

7. Bronner GmbH v. Mediaprint

CJEU, Case C-7/97

Area: Refusal to supply / essential facilities

The Court established stringent conditions for treating refusal to provide access to infrastructure as an abuse of dominance, including indispensability, elimination of competition and absence of objective justification.

Relevance

An avatar platform might be accused of unlawfully refusing:

• API access;
• interoperability;
• identity access;
• cross-platform communication.

But Bronner should not automatically be applied merely because a platform refuses interoperability.

8. Alphabet and Others — Android Auto

CJEU, Case C-233/23, judgment 25 February 2025

Area: Digital-platform interoperability

The Court addressed Google's refusal to make Android Auto interoperable with a third-party application. It clarified that the strict Bronner framework does not automatically apply where a digital platform was developed to permit third-party applications to use it.

Relevance

This is particularly important for avatar ecosystems.

If an avatar platform is expressly designed as an ecosystem for third-party developers, a refusal to permit interoperability may be examined differently from a refusal to share a privately developed facility.

13. Major Competition Risks

14. Social-Interaction Control as a Competition Issue

The distinctive feature of avatar ecosystems is that social interaction itself can become an economic bottleneck.

Consider:

User joins Platform A

↓

Creates avatar

↓

Builds friendships

↓

Purchases virtual goods

↓

Develops reputation

↓

Creates content

↓

Attracts followers

↓

Becomes dependent on Platform A's social graph

The platform now controls not merely a software product but a social coordination infrastructure.

That can make competition more difficult because a rival cannot simply offer a technically better avatar.

It must reproduce the existing ecosystem of users and relationships.

15. Potential Abuse Theories

A. Exclusionary interoperability

A dominant platform may restrict competitors' access to APIs or technical interfaces.

B. Social-graph foreclosure

Users may be prevented from communicating with users on rival platforms.

C. Self-preferencing

The platform may favor its own avatars, games, virtual worlds or AI agents.

D. Tying

Access to social functionality may be conditioned on use of the platform's:

• payment service;
• marketplace;
• identity system;
• currency;
• hardware.

E. Discriminatory access

Third-party developers may receive inferior:

• APIs;
• data;
• ranking;
• technical support;
• distribution;
• advertising access.

F. Acquisitions of nascent competitors

A dominant ecosystem may acquire emerging avatar, VR or social-interaction platforms.

The Meta/Within litigation demonstrates why acquisitions in emerging VR ecosystems can attract competition scrutiny.

16. Remedies

Competition authorities could theoretically consider several remedies depending on the violation.

Structural remedies

• divestiture;
• separation of marketplace and content operations;
• separation of hardware and platform businesses.

Behavioral remedies

• non-discriminatory API access;
• interoperability requirements;
• anti-self-preferencing rules;
• transparent ranking;
• prohibition on discriminatory developer access.

Data remedies

• data portability;
• data-access obligations;
• restrictions on combining datasets.

Consumer remedies

• avatar portability;
• virtual-goods portability;
• social-graph portability;
• transparent switching mechanisms.

Developer remedies

• alternative payment systems;
• alternative app distribution;
• freedom to communicate with users;
• fair access to APIs.

The appropriate remedy would depend on the jurisdiction, demonstrated competitive harm and proportionality.

17. Application of Competition Law to an Avatar Ecosystem

A useful analytical framework is:

Step 1 — Define the market

↓

Avatar platform?
VR social network?
Virtual goods?
App distribution?
Social networking?

↓

Step 2 — Identify market power

Network effects + switching costs + data + user base + ecosystem control

↓

Step 3 — Identify the bottleneck

Identity / API / marketplace / payment / discovery / social graph

↓

Step 4 — Identify exclusionary conduct

Tying / refusal / self-preferencing / discriminatory access / acquisitions

↓

Step 5 — Examine competitive effects

Entry barriers + foreclosure + reduced innovation + reduced choice

↓

Step 6 — Consider objective justification

Security + privacy + safety + technical compatibility + investment incentives

↓

Step 7 — Determine proportionate remedy

Interoperability / portability / behavioral remedy / structural remedy

18. Important Distinction: Competition Law vs. Platform Regulation

Not every restrictive feature of an avatar platform constitutes an antitrust violation.

For example, restricting third-party access may have legitimate reasons involving:

• cybersecurity;
• child safety;
• privacy;
• fraud prevention;
• intellectual-property protection;
• technical reliability.

Therefore, competition analysis generally requires more than showing that a platform is large or that users dislike its policies.

The critical questions are:

Does the undertaking possess substantial market power?

Is the challenged conduct exclusionary or otherwise prohibited?

Does it harm the competitive process rather than merely an individual competitor?

Is there an objective justification?

19. Conclusion

Avatar ecosystem platforms create a distinctive form of competition-law problem because they can combine social networking, digital identity, VR hardware, application distribution, virtual goods, payments, advertising and user data into one integrated ecosystem.

The most important competition concerns are:

1. network-effect entrenchment;
2. avatar and social-graph lock-in;
3. interoperability restrictions;
4. API foreclosure;
5. self-preferencing;
6. app-store and marketplace control;
7. tying and bundling;
8. exclusive use of ecosystem data;
9. acquisition of emerging competitors; and
10. algorithmic control over social discovery.

The strongest legal analogies come from FTC v. Meta/Facebook, FTC v. Meta/Within, Ohio v. American Express, Epic Games v. Apple, United States v. Microsoft, Google Shopping, Bronner, and Android Auto. Together, these cases show how traditional antitrust principles concerning network effects, platform market definition, monopolization, vertical foreclosure, self-preferencing, interoperability and access can be applied to emerging avatar and metaverse ecosystems.