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Welcome. I'm an assistant professor in the Strategy and Business Economics Division of the Sauder School of Business at the University of British Columbia. Before joining UBC, I was a post-doctoral fellow at Harvard Business School and an assistant professor at the University of Western Ontario. I received my Ph.D. in economics from Yale University in 2023.
My research areas include industrial organization and the economics of digitization. I am especially interested in platform markets, e-commerce, the restaurant industry, and health insurance.
Here is my CV.
Please find a list of my papers and research projects below.
Contact: michael.sullivan@sauder.ubc.ca
Working papers
Fee Optimality in a Two-Sided Market, Mar. 2026 [Link] [Coverage: Chamber of Progress, QSR.com]
Accepted at the Journal of Political Economy
Note: an earlier version of this paper entitled "Price Controls in a Multi-Sided Market" is available here [online appendix]
Identifying Demand with Network Externalities, Sept. 2026 [Link]
One-Sided Regulation, Two-Sided Responses: Evidence from Food Delivery, Oct. 2026 [Link]
Cross-Channel Competition and Complementarities in US Retail, with Hiroki Saruya, Aug. 2026 [Link]
Publications
Sources of Limited Consideration and Market Power in E-Commerce, American Economic Journal: Microeconomics, 2026. Lead article [Link]
Market Design for Personal Data, with Dirk Bergemann, Jacques Crémer, David Dinielli, Carl-Christian Groh, Paul Heidhues, Maximilian Schaefer, Monika Schnitzer, Fiona M. Scott Morton, and Katja Seim. Yale Journal on Regulation, 2023 [Link]
Selected works in progress
Labour Regulation in a Multi-Sided Market
What Prevents Health Insurance Take-up? Quantifying Frictions and Policy Responses, with Soheil Ghili, Igal Hendel, and Michael Whinston
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