研討日期	2024年11月04日12:10-13:50
研討地點	國立臺灣大學社會科學院710會議室
主講題目 Title of the paper	Platform competition with common ownership
作者 Authors of the paper	Jiancai Pi, Pengqing Zhang
文獻出處 Journal, vol.(issue), pp	Journal of Economics (2024) 142:247–265 https://doi.org/10.1007/s00712-024-00864-z
主講人	曹古駒
參加人員	曹古駒、黃鴻、林燕淑、許至乙、王光正、彭正浩、王羿傑、Ayu Sasni Munte、Micah Mainala、Anggoro Prihandoko、 Bastien Latour、楊雅堂、洪睿翔
摘要 Abstract of the Paper	This paper investigates the allocative efects of platform competition with common ownership in two-sided markets. We fnd that when both sides singlehome, common ownership increases the consumer surplus for the side treated as a loss leader, but decreases the consumer surplus for the other side. When one side multihomes, common ownership does not afect the consumer surplus for the multihoming side, but decreases the consumer surplus for the singlehoming side. When we introduce demand expansion into the model, captive users may still beneft from common ownership if they are treated as a loss leader. We show that common ownership does not necessarily hurt all platform users by extending the canonical Armstrong model of platform competition.