研討日期	2022年12月19日上午12:40~ 13:350
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	On the welfare impact of mergers of complements: Raising rivals’ costs versus elimination of double marginalization
作者 Authors of the paper	Uğur Akgün, Cristina Caffarra, Federico Etro, Robert Stillman a
文獻出處 Journal, vol.(issue), pp	Economics Letters Volume 195, October 2020, 109429 https://doi.org/10.1016/j.econlet.2020.109429
主講人	王光正博士
參加人員	黃鴻、林燕淑、彭正浩、鍾暳陵、許至乙、蘇家叡、Suttiwan Suwannajoi、Damiana Simanjuntak、Manuel-Milan Ramsler、Noya Yukari Siregar
摘要 Abstract of the paper	A common view in antitrust analysis is that mergers of complements can have raising rivals’ costs and elimination of double marginalization effects, with the net effect on consumer welfare thus unclear. We revise this view in the context of a merger between a monopolist in one market and a duopoly producer of a complement good. With linear demand and imperfect substitutability, while such a merger increases the price of the monopolized component, elimination of double marginalization dominates any raising rivals’ costs effects, increasing consumer welfare. We discuss a variety of extensions.