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Licensed Unlicensed Requires Authentication Published by De Gruyter November 14, 2022

Welfare Effects of Socially Conscious Platforms in Two-Sided Markets

  • Hayama Abe and Yusuke Zennyo EMAIL logo


This note presents a model of platform competition in a two-sided market, with one competing platform pursuing not only its own profit but also consumer surplus. We investigate how the presence of such a socially conscious platform affects market competition. Results indicate that greater emphasis as an objective put on consumer surplus by the socially conscious platform leads to higher market share. Creation of a larger network enhances the total benefits associated with indirect network externalities in the two-sided market. When the extent of indirect network externalities is sufficiently strong, increased network benefits can improve social welfare. By contrast, if indirect network externalities are weak, then the socially conscious platform might be detrimental to society.

Corresponding author: Yusuke Zennyo, Graduate School of Business Administration, Kobe University, Kobe, Japan, E-mail:

Award Identifier / Grant number: 20H01551

Award Identifier / Grant number: 22H00043


The authors are grateful to Editor-in-Chief Till Requate for his constructive comments.

  1. Research funding: This work was partially supported by JSPS KAKENHI Grant Numbers 20H01551 and 22H00043. The usual disclaimers apply.


Armstrong, M. 2006. “Competition in Two-Sided Markets.” The RAND Journal of Economics 37 (3): 668–91. in Google Scholar

Arya, A., B. Mittendorf, and R. N. Ramanan. 2019. “Beyond Profits: The Rise of Dual-Purpose Organizations and its Consequences for Disclosure.” The Accounting Review 94 (1): 25–43. in Google Scholar

Busch, C., I. Graef, J. Hofmann, and A. Gawer. 2021. Uncovering Blindspots in the Policy Debate on Platform Power. Final Report By the Expert Group for the Observatory on the Online Platform Economy. Also available at in Google Scholar

De Fraja, G., and F. Delbono. 1989. “Alternative Strategies of a Public Enterprise in Oligopoly.” Oxford Economic Papers 41 (2): 302–11. in Google Scholar

Fanti, L., and D. Buccella. 2016. “Network Externalities and Corporate Social Responsibility.” Economics Bulletin 36 (4): 2043–50.Search in Google Scholar

Hino, Y., and Y. Zennyo. 2017. “Corporate Social Responsibility and Strategic Relationships.” International Review of Economics 64 (3): 231–44. in Google Scholar

Matsumura, T. 1998. “Partial Privatization in Mixed Duopoly.” Journal of Public Economics 70 (3): 473–83. in Google Scholar

Rochet, J. C., and J. Tirole. 2003. “Platform Competition in Two-Sided Markets.” Journal of the European Economic Association 1 (4): 990–1029. in Google Scholar

Received: 2022-10-16
Accepted: 2022-11-01
Published Online: 2022-11-14

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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