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Minimum quality standards and benchmarking in differentiated duopoly

Author

Listed:
  • Peter Michaelis

    (University of Augsburg)

  • Thomas Ziesemer

    (University of Augsburg)

Abstract

We study a two-period model of a duopoly with goods differentiated by quality. The periods’ length corresponds to the goods’ useful lifespan, and consumers are heterogeneous in their valuation of quality. In the second period, the regulator fixes a minimum quality standard based either on the quality supplied by the high-quality firm in the first period (strict regulation) or on the average quality supplied in the first period (average regulation). Assuming a covered market, we show that such an approach leads to decreasing qualities in the first period, and increasing qualities in the second one. In both periods, net utility aggregated over consumers is increasing and profits aggregated over firms are decreasing. Taken together, average regulation always leads to an increase in the present value of welfare, whereas strict regulation can cause a decline. If the discount factor exceeds a certain threshold, a policy based on average regulation is even superior to implementing the optimal minimum quality standard already in the first period.

Suggested Citation

  • Peter Michaelis & Thomas Ziesemer, 2022. "Minimum quality standards and benchmarking in differentiated duopoly," The Japanese Economic Review, Springer, vol. 73(3), pages 515-537, July.
    • Handle: RePEc:spr:jecrev:v:73:y:2022:i:3:d:10.1007_s42973-020-00050-y
    DOI: 10.1007/s42973-020-00050-y
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    References listed on IDEAS

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    More about this item

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality

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