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DTSTART:20251026T030000
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RDATE:20261025T030000
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BEGIN:VEVENT
UID:calendar.142458.field_date.0@www.tse-fr.eu
DTSTAMP:20260423T155935Z
CREATED:20260421T141001Z
DESCRIPTION:Benjamin Leyden (Cornell University)\, “Sherlocking: The Effect
 s of Platform-Owner Entry on the Competitive Behavior of Third-Party Firms
 ”\, Economics of Platforms Seminar\, May 7\, 2026\, 14:00–15:00\, Online_Z
 oom.\n\nI study how third-party firms respond when a platform owner enters
  its own marketplace\, analyzing Apple's entries into App Store submarkets
  from 2016-2021. Using text embeddings to define markets and a staggered d
 ifference-indifferences design\, I find that Apple's entry deters new comp
 etitors and shifts incumbents' monetization strategies\, but effects vary 
 widely: many markets show no meaningful response\, while others move in op
 posing directions across a host of monetization and quality outcomes. Resp
 onses depend on how Apple enters and apps' competitive proximity to Apple.
  This heterogeneity suggests targeted oversight rather than categorical re
 strictions on platform-owner entry.
DTSTART;TZID=Europe/Paris:20260507T150000
DTEND;TZID=Europe/Paris:20260507T160000
LAST-MODIFIED:20260422T001001Z
LOCATION:May 7\, 2026\, 14:00–15:00\, Online_Zoom
SUMMARY:Economics of Platforms Seminar
URL;TYPE=URI:https://www.tse-fr.eu/seminars/2026-sherlocking-effects-platfo
 rm-owner-entry-competitive-behavior-third-party-firms
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