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标题：Strategic and welfare implications of product bundling under Bertrand competition
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作者：Yang-Ming Chang ; Hung-Yi Chen
期刊名称：Economics Bulletin
电子版ISSN：1545-2921
出版年度：2012
卷号：32
期号：4
页码：2899-2907
出版社：Economics Bulletin
摘要：This paper examines how Bertrand competition affects the welfare implications of bundling by a multi-product firm, which is a monopoly over one good and faces a single-product competitor in a second good. We find that the equilibrium bundle price is lower than the sum of the prices of the two goods sold separately. We also show that bundling benefits both firms but hurts consumers, despite that social welfare increases. Under price competition, bundling thus creates a conflict between the maximization of social welfare and consumer surplus.
关键词：commodity bundling; multiproduct firm; social welfare; Bertrand price competition