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Competition, Privacy, and Multi-Homing

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  • Jean-Marc Zogheib

Abstract

Two digital firms compete in prices and information disclosure levels. A consumer signing up to one firm's service decides how much personal information to provide. We find that firms essentially trade-off between consumer valuations and disclosure levels to determine their business strategies when consumers single-home. Under multi-homing, business strategies are more complex to assess and may completely shift compared to single-homing. All things being equal, implementing a strict privacy regime with no data disclosure can be optimal under single-homing, while a soft privacy regime with data disclosure may be preferred under multi-homing.

Suggested Citation

  • Jean-Marc Zogheib, 2023. "Competition, Privacy, and Multi-Homing," EconomiX Working Papers 2023-34, University of Paris Nanterre, EconomiX.
    • Handle: RePEc:drm:wpaper:2023-34
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    File URL: https://economix.fr/pdf/dt/2023/WP_EcoX_2023-34.pdf
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    References listed on IDEAS

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    1. Jin‐Hyuk Kim & Liad Wagman & Abraham L. Wickelgren, 2019. "The impact of access to consumer data on the competitive effects of horizontal mergers and exclusive dealing," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 28(3), pages 373-391, June.
    2. Choi, Jay Pil & Jeon, Doh-Shin & Kim, Byung-Cheol, 2019. "Privacy and personal data collection with information externalities," Journal of Public Economics, Elsevier, vol. 173(C), pages 113-124.
    3. de Cornière, Alexandre & Taylor, Greg, 2020. "Data and Competition: a General Framework with Applications to Mergers, Market Structure, and Privacy Policy," TSE Working Papers 20-1076, Toulouse School of Economics (TSE).
    4. de Cornière, Alexandre & Taylor, Greg, 2022. "Data and Competition: a Simple Framework with Applications to Mergers and Market Structure," CEPR Discussion Papers 14446, Centre for Economic Policy Research.
    5. Stigler, George J., 1980. "An Introduction to Privacy in Economics and Politics," Working Papers 10, The University of Chicago Booth School of Business, George J. Stigler Center for the Study of the Economy and the State.
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    Cited by:

    1. Bounie, David & Dubus, Antoine & Waelbroeck, Patrick, 2025. "Competition and the two margins of privacy," International Review of Law and Economics, Elsevier, vol. 83(C).

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    Keywords

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    JEL classification:

    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory
    • D40 - Microeconomics - - Market Structure, Pricing, and Design - - - General
    • L21 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Business Objectives of the Firm
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices

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