IDEAS home Printed from https://ideas.repec.org/p/kyo/wpaper/954.html
   My bibliography  Save this paper

Competition Policy at the Intensive and Extensive Margins in General Equilibrium

Author

Listed:
  • Kenji Fujiwara

    (Kwansei Gakuin University)

  • Keita Kamei

    (Yamagata University)

Abstract

This paper examines welfare effects of competition policies in a gen- eral equilibrium model in which perfectly competitive and oligopolistic industries coexist and compete for a common factor of production. We first show that increasing the number of oligopolistic firms raises wel- fare if the oligopolists' production technology exhibits non-increasing returns to scale. Then, we address another competition policy mod- eled by an increase in the portion of perfectly competitive industries, finding that this policy improves welfare if decreasing returns of the oligopolists' technology are strong enough. These results suggest that the degree of returns to scale plays a key role for welfare-enhancing competition policy.

Suggested Citation

  • Kenji Fujiwara & Keita Kamei, 2016. "Competition Policy at the Intensive and Extensive Margins in General Equilibrium," KIER Working Papers 954, Kyoto University, Institute of Economic Research.
    • Handle: RePEc:kyo:wpaper:954
    as

    Download full text from publisher

    File URL: http://www.kier.kyoto-u.ac.jp/DP/DP954.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. J. Peter Neary, 2016. "International Trade in General Oligopolistic Equilibrium," Review of International Economics, Wiley Blackwell, vol. 24(4), pages 669-698, September.
    2. Udo Kreickemeier & Frode Meland, 2017. "Non-Traded Goods, Globalization, and Union Influence," World Scientific Book Chapters, in: International Trade and Labor Markets Welfare, Inequality and Unemployment, chapter 7, pages 173-201, World Scientific Publishing Co. Pte. Ltd..
    3. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, December.
    4. Lahiri, Sajal & Ono, Yoshiyasu, 1988. "Helping Minor Firms Reduces Welfare," Economic Journal, Royal Economic Society, vol. 98(393), pages 1199-1202, December.
    5. Rudy Colacicco, 2015. "Ten Years Of General Oligopolistic Equilibrium: A Survey," Journal of Economic Surveys, Wiley Blackwell, vol. 29(5), pages 965-992, December.
    6. Kotaro Suzumura & Kazuharu Kiyono, 1987. "Entry Barriers and Economic Welfare," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 54(1), pages 157-167.
    7. Arnott, Richard J. & Greenwald, Bruce & Kanbur, Ravi & Nalebuff, Barry, 2003. "Joseph Stiglitz and Economics for an Imperfect World," Working Papers 127202, Cornell University, Department of Applied Economics and Management.
    8. Kamei, Keita, 2014. "Pro-competitive effect, division of labor, and firm productivity," Economics Letters, Elsevier, vol. 124(1), pages 132-135.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Fujiwara Kenji, 2020. "The Effects of Entry when Monopolistic Competition and Oligopoly Coexist," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 20(2), pages 1-11, June.
    2. Kenji Fujiwara, 2018. "Trade, Productivity and Welfare when Monopolistic Competition and Oligopoly Coexist," Discussion Paper Series 170, School of Economics, Kwansei Gakuin University, revised Jan 2018.
    3. Fujiwara, Kenji, 2017. "Trade and FDI liberalization in a general oligopolistic equilibrium," Japan and the World Economy, Elsevier, vol. 41(C), pages 45-49.
    4. Kenji Fujiwara, 2016. "Trade and FDI liberalization in a general oligopolistic equilibrium," Discussion Paper Series 150, School of Economics, Kwansei Gakuin University, revised Nov 2016.
    5. Wrona, Jens & Kreickemeier, Udo, 2016. "Industrialisation and the Big Push in a Global Economy," VfS Annual Conference 2016 (Augsburg): Demographic Change 145707, Verein für Socialpolitik / German Economic Association.
    6. Colacicco, Rudy, 2021. "Environment, imperfect competition, and trade: Insights for optimal policy in general equilibrium," Research in Economics, Elsevier, vol. 75(2), pages 144-151.
    7. Kenji Fujiwara & Keita Kamei, 2018. "Trade liberalization, division of labor and welfare under oligopoly," The Journal of International Trade & Economic Development, Taylor & Francis Journals, vol. 27(1), pages 91-101, January.
    8. Kenji Fujiwara, 2018. "The Effects of Entry under the Coexistence of Oligopolistic and Monopolistic Competition," Discussion Paper Series 174, School of Economics, Kwansei Gakuin University, revised Feb 2018.
    9. Rudy Colacicco, 2015. "Ten Years Of General Oligopolistic Equilibrium: A Survey," Journal of Economic Surveys, Wiley Blackwell, vol. 29(5), pages 965-992, December.
    10. Toshihiro Matsumura, 2000. "Entry regulation and social welfare with an integer problem," Journal of Economics, Springer, vol. 71(1), pages 47-58, February.
    11. Suryaprakash Mishra, 2024. "Entry, market structures and welfare," Journal of Economics, Springer, vol. 142(3), pages 267-276, August.
    12. Haiwen Zhou, 2018. "Impact of international trade on unemployment under oligopoly," The Journal of International Trade & Economic Development, Taylor & Francis Journals, vol. 27(4), pages 365-379, May.
    13. J. Peter Neary, 2007. "Cross-Border Mergers as Instruments of Comparative Advantage," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 74(4), pages 1229-1257.
    14. Haiwen Zhou, 2020. "Monitoring Intensity and Technology Choice in a Model of Unemployment," Eastern Economic Journal, Palgrave Macmillan;Eastern Economic Association, vol. 46(3), pages 504-520, June.
    15. Colin von Negenborn, 2023. "The more the merrier? On the optimality of market size restrictions," Review of Economic Design, Springer;Society for Economic Design, vol. 27(3), pages 603-634, September.
    16. Kazuharu Kiyono & Jota Ishikawa, 2013. "Reexamination of Strategic Public Policies," The Japanese Economic Review, Japanese Economic Association, vol. 64(2), pages 201-231, June.
    17. Mukherjee, Arijit & Zeng, Chenhang, 2022. "Social desirability of entry in a bilateral oligopoly—The implications of (non) sunk costs," Mathematical Social Sciences, Elsevier, vol. 118(C), pages 12-19.
    18. Susumu Cato & Toshihiro Matsumura, 2019. "Entry License Tax: Stackelberg versus Cournot," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 175(2), pages 258-271.
    19. Ansgar F. Quint & Jonas F. Rudsinske, 2024. "Asymmetric general oligopolistic equilibrium," The World Economy, Wiley Blackwell, vol. 47(3), pages 1167-1190, March.
    20. Colacicco, Rudy, 2024. "Strategic trade policy in general oligopolistic equilibrium: The case of import tariffs," Research in Economics, Elsevier, vol. 78(2).

    More about this item

    Keywords

    Competition policy; General oligopolistic equilibrium (GOLE); Welfare; Returns to scale.;
    All these keywords.

    JEL classification:

    • L4 - Industrial Organization - - Antitrust Issues and Policies
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:kyo:wpaper:954. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Makoto Watanabe (email available below). General contact details of provider: https://edirc.repec.org/data/iekyojp.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.