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Privacy regulation and online concentration during demand peaks: evidence from the E-commerce sector

Author

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  • Lorien Sabatino

    (Politecnico di Torino)

  • Geza Sapi

    (Heinrich Heine University of Düsseldorf)

Abstract

In this paper, we study how the introduction of the GDPR affected online traffic and concentration. We rely on a unique dataset collecting information on websites’ visits in the E-commerce sector, and we implement a difference-in-differences model that exploits the geographical origin of website traffic. We classify websites according to their pre-GDPR amount of visits to capture potential heterogeneous effects based on websites’ size. We exploit the advent of the 2018 Black Friday to assess how online consumption and concentration react in a period of demand peak when constrained by privacy regulation. Our findings show that (1) online traffic decreases after GDPR, (2) the impact is higher for small websites which however gain traffic during demand peaks, and (3) online concentration decreases in Germany but increases in Italy.

Suggested Citation

  • 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.
    • Handle: RePEc:spr:epolin:v:50:y:2023:i:2:d:10.1007_s40812-022-00248-8
    DOI: 10.1007/s40812-022-00248-8
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    References listed on IDEAS

    as
    1. Kretschmer, Tobias & Peukert, Christian & Bechtold, Stefan & Batikas, Michail, 2020. "European Privacy Law and Global Markets for Data," CEPR Discussion Papers 14475, C.E.P.R. Discussion Papers.
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    More about this item

    Keywords

    Privacy regulation; GDPR; Web traffic; E-commerce; Demand Peak;
    All these keywords.

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L5 - Industrial Organization - - Regulation and Industrial Policy

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