{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"workspace","updatedThrough":"2026-08-15","citation":"Antitrust Radar, Atlas Research Workspace: Digital Platforms; Five Digital Gateways (2026-08-15); 2 canonical profiles and 1 declared supporting edges.","guardrail":"The workspace assembles canonical profiles and declared Atlas edges for research navigation. A direct edge preserves only its encoded evidence statement. 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trace usage and referral screens into exact product, operator, official-record, and research links while keeping every digital denominator separate. search, browser, mobile operating system, social referral, and ai-assistant usage are separate screens. their adjacency does not establish one ecosystem market, common control, or a combined concentration measure. stable user and firm panels, default and distribution contracts, switching, multihoming, interoperability, data access, compute, price, quality, and entry records. technology-policy researchers, reporters, authorities, and advocates ar-rb-2026-02 five digital gateways ar-ci-2026-02 four digital usage systems traced four different structural paths.","connectionCount":15},{"id":"report:rep-digital-gateways","kind":"report","label":"Five Digital Gateways","shortLabel":"Five Digital Gateways","description":"A source-backed research brief tracing search, browser, mobile operating-system, social-referral, and AI-assistant concentration without collapsing them into one platform market or ecosystem score.","href":"/reports/digital-gateways-brief","metricLabel":"Evidence sources","metricValue":"5","detail":"5 linked markets","status":"published","year":2026,"color":"#6366f1","searchText":"five digital gateways u.s. platform concentration across five separately bounded usage systems a source-backed research brief tracing search, browser, mobile operating-system, social-referral, and ai-assistant concentration without collapsing them into one platform market or ecosystem score. five system histories, exact share rows, official product-attribution paths, and a public research agenda with every denominator kept separate. five statcounter u.s. public usage-share sources: april 2023-april 2026 search, browser, mobile operating-system, and social-referral anchors, plus the may 2026 ai-assistant baseline. official product-attribution records remain a separate evidence layer.","connectionCount":12}],"connectorNodes":[],"pairs":[{"id":"topic:digital-platforms--report:rep-digital-gateways","leftId":"topic:digital-platforms","leftLabel":"Digital Platforms","rightId":"report:rep-digital-gateways","rightLabel":"Five Digital Gateways","status":"direct","directEdgeCount":1,"shortestHopCount":1,"alternativeShortestPathCount":0,"primaryPathNodeIds":["topic:digital-platforms","report:rep-digital-gateways"],"primaryPathEdgeIds":["topic-publication:digital-platforms:AR-RB-2026-02"]}],"sources":[],"rows":[{"id":"topic-publication:digital-platforms:AR-RB-2026-02","layer":"research","relationshipType":"topic_publication","relationshipLabel":"Declared topic membership","fromId":"topic:digital-platforms","fromKind":"topic","fromLabel":"Digital Platforms","fromHref":"/research/topics/digital-platforms","toId":"report:rep-digital-gateways","toKind":"report","toLabel":"Five Digital Gateways","toHref":"/reports/digital-gateways-brief","evidenceLabel":"Publication theme contract","evidenceDetail":"AR-RB-2026-02, Five Digital Gateways, carries the exact Digital Platforms publication-theme membership.","sourceId":null,"sourceUrl":null,"confidenceLevel":"bounded","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A topic-to-publication link records one exact editorial theme membership. 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