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Online privacy and market structure: Theory and evidence

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  • Sabatino, Lorien
  • Sapi, Geza

Abstract

This paper investigates how privacy regulation affects the structure of online markets. We provide a simple theoretical model capturing the basic trade-off between the degree of privacy intrusion and the informativeness of advertising. We derive empirically testable hypotheses regarding a possibly asymmetric effect of privacy regulation on large and small firms using a diff-diff-diff model with heterogeneous treatment timing. Our theoretical model predicts that privacy regulation may affect predominantly large firms, even if - as our data confirms - these large firms tend to offer more privacy. Our empirical results show that, if any, only large firms were negatively affected, suggesting that privacy regulation might boost competition by leveling out the playing field for small firms.

Suggested Citation

  • Sabatino, Lorien & Sapi, Geza, 2019. "Online privacy and market structure: Theory and evidence," DICE Discussion Papers 308, Heinrich Heine University Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
    • Handle: RePEc:zbw:dicedp:308
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    References listed on IDEAS

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    Cited by:

    1. Colombo, Stefano & Graziano, Clara & Pignataro, Aldo, 2024. "Imperfect history-based price discrimination with asymmetric market shares," Information Economics and Policy, Elsevier, vol. 67(C).
    2. Jin, Ginger Zhe & Wagman, Liad, 2021. "Big data at the crossroads of antitrust and consumer protection," Information Economics and Policy, Elsevier, vol. 54(C).
    3. Lorien Sabatino & Geza Sapi, 2023. "Privacy regulation and online concentration during demand peaks: evidence from the E-commerce sector," Economia e Politica Industriale: Journal of Industrial and Business Economics, Springer;Associazione Amici di Economia e Politica Industriale, vol. 50(2), pages 265-282, June.
    4. Kesler, Reinhold & Kummer, Michael E. & Schulte, Patrick, 2019. "Competition and privacy in online markets: Evidence from the mobile app industry," ZEW Discussion Papers 19-064, ZEW - Leibniz Centre for European Economic Research.
    5. Congiu, Raffaele & Sabatino, Lorien & Sapi, Geza, 2022. "The Impact of Privacy Regulation on Web Traffic: Evidence From the GDPR," Information Economics and Policy, Elsevier, vol. 61(C).

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    More about this item

    Keywords

    Privacy; Competition; Regulation; ePrivacy Directive;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L86 - Industrial Organization - - Industry Studies: Services - - - Information and Internet Services; Computer Software
    • M37 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Marketing and Advertising - - - Advertising
    • M38 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Marketing and Advertising - - - Government Policy and Regulation

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