Economic observatory / digital systems

Digital Platform Systems

Explore separate histories of search referrals, browser use, mobile operating systems, social referrals, and AI assistant use. Different denominators prevent a combined ecosystem market-share score.

System field2026

01Search engines7,359HHIGoogle Search85.2%02Browsers3,612HHIChrome50.0%03Mobile operating systems5,337HHIiOS63.1%04Social referrals4,995HHIFacebook68.9%05AI assistants4,804HHIChatGPT67.1%

Evidence systems: 5
HHI anchors: 17
Share rows: 146
Attributed operators: 20
Measurement sources: 5

Public web-analytics screensExact same-month anchorsDefinition-aware HHIOfficial product attributionNo combined platform-power measure

Bounded platform evidence

AI assistant usage

1 system / 1 HHI anchors / 6 exact share rows

Evidence system

Systems: 1
HHI anchors: 1
Share rows: 6
Operators: 6
Sources: 1

Research surface

U.S. generative AI assistant usage

Observed concentration histories

A common HHI scale, never a common market.

Blank cells are gaps. Every value opens through its own definition and source.

Evidence systemSame-month anchors where available

2023April

2024April

2025April

2026April

Gap

4,804first anchor

AI assistant usage

U.S. generative AI assistant usage

Consumer generative AI assistant usage concentration from StatCounter Global Stats for May 2026. The market tracks which AI chatbots people use across StatCounter-tracked assistants, an observed usage-share proxy rather than revenue, total user counts, or the broader AI supply chain of chips and cloud.

Latest HHI: 4,804
Anchors: 1
Categories: 6

Common 0-10,000 HHI axis / separate evidence contract

ChatGPT202667.13%snapshot Google Gemini202610.86%snapshot Microsoft Copilot202610.79%snapshot Claude20265.99%snapshot Perplexity20265.18%snapshot DeepSeek20260.05%snapshot

Measurement source custody

1 public measurement source

Operator-attribution sources stay in the matrix and exported packet; they are not substituted for measurement sources.

No ecosystem score.These five screens do not define one digital-platform market. Each keeps its own product boundary, page-view or referral denominator, participant categories, month, and permitted use. HHI values are never added, averaged, ranked into an ecosystem score, or treated as evidence of conduct.