{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","updatedThrough":"2026-08-15","guardrail":"The atlas exposes only relationships declared in the current public data. 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which distribution agreements and default placements affect switching at each gateway? where do data, compute, interoperability, or access conditions constrain entry without assuming the same mechanism across products? which firm-level and user-level records can separate usage movement from changes in product quality, availability, or measurement? u.s. search engine usage search engines digital platforms u.s. browser usage browsers software u.s. generative ai assistant usage ai assistants digital platforms u.s. mobile operating-system web usage mobile operating systems digital platforms u.s. social-media referral traffic social referrals digital platforms","connectionCount":8,"x":450,"y":142,"distance":1,"radius":11,"labelVisible":true},{"id":"question:market-hhi:us-browser-usage","kind":"question","label":"Which entry, exit, share, switching, price, quality, or capacity evidence can explain the movement inside this exact market boundary?","shortLabel":"Browsers: Herfindahl-Hirs...","description":"Browsers moved from 3,720 in 2025 to 3,612 in 2026 (-108.0 HHI points). 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