變局與挑戰—貿易政策與產業組織研究群
研討日期 Date, time	2025-08-11 T 10:30-12:00
研討地點 Location	國立臺灣大學社會科學院710會議室 Room 710, College of Social Science, NTU
主講題目 Title of the paper	Are dominant platforms good for consumers?
作者 Authors of the paper	Chiu Yu Ko & Bo Shen
文獻出處 Journal, vol.(issue), pp	Economic Inquiry Volume 59, Issue 3, pages 1364–1377. https://doi.org/10.1111/ecin.12966
主講人 Presenter	曹古駒
參加人員 Participants	黃鴻，林燕淑，郭文忠，彭正浩，施姵全，許志乙，張瑞雲，林晏如，Ayu Sasni Munte，曹古駒，丁虹仁，Micah Mainala，楊雅棠，蕭溙辰
摘要 Abstract of the Paper	We develop a two-sided market model where both platforms and sellers charge buyers for access. When network effects are moderate, a dominant platform that attracts more sellers and buyers is more likely to arise. Compared to when platforms split the market equally, a dominant platform always leads to higher consumer surplus and total welfare. Moreover, both of these measures improve as network effects increase. Our results suggest that competition authorities should be cautious regarding complaints related to dominant platforms in two-sided markets, as they may be good for consumers.