IDEAS home Printed from https://ideas.repec.org/p/kgu/wpaper/134.html
   My bibliography  Save this paper

Product Line Strategy in a Vertically Di¤erentiated Duopoly

Author

Listed:
  • Ryoma Kitamura

    (Graduate School of Economics, Kwansei Gakuin University)

  • Tetsuya Shinkai

    (School of Economics, Kwansei Gakuin University)

Abstract

We consider a duopoly model in which rms with di¤erent costs supply two vertically di¤erentiated products in the same market. We show that the e¢ cient rm produces more of the high-quality good and the ine¢ cient one produces more of the low-quality good in equilibrium. We also nd that a change in the quality superiority of goods and relative cost e¢ ciency ratios leads to cannibalization from one good to the other and characterize graphically the product line strategies of rms through the two ratios.

Suggested Citation

  • Ryoma Kitamura & Tetsuya Shinkai, 2015. "Product Line Strategy in a Vertically Di¤erentiated Duopoly," Discussion Paper Series 134, School of Economics, Kwansei Gakuin University, revised Aug 2015.
    • Handle: RePEc:kgu:wpaper:134
    as

    Download full text from publisher

    File URL: http://192.218.163.163/RePEc/pdf/kgdp134.pdf
    File Function: First version, 2015
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Motta, Massimo, 1993. "Endogenous Quality Choice: Price vs. Quantity Competition," Journal of Industrial Economics, Wiley Blackwell, vol. 41(2), pages 113-131, June.
    2. Joan Calzada & Tommaso M. Valletti, 2012. "Intertemporal Movie Distribution: Versioning When Customers Can Buy Both Versions," Marketing Science, INFORMS, vol. 31(4), pages 649-667, July.
    3. Katz, Michael L & Shapiro, Carl, 1985. "Network Externalities, Competition, and Compatibility," American Economic Review, American Economic Association, vol. 75(3), pages 424-440, June.
    4. Justin P. Johnson & David P. Myatt, 2003. "Multiproduct Quality Competition: Fighting Brands and Product Line Pruning," American Economic Review, American Economic Association, vol. 93(3), pages 748-774, June.
    5. Ryoma Kitamura & Tetsuya Shinkai, 2013. "The Economics of Cannibalization: A Duopoly in which Firms Supply Two Vertically Differentiated Products," Discussion Paper Series 100, School of Economics, Kwansei Gakuin University, revised Feb 2013.
    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. Ryoma Kitamura & Tetsuya Shinkai, 2014. "Strategic Choice on Product Line in Vertically Differentiated Duopoly," Discussion Paper Series 120, School of Economics, Kwansei Gakuin University, revised Aug 2014.
    2. Ryoma Kitamura & Tetsuya Shinkai, 2014. "Cannibalization within the Single Vertically Di¤erentiated Duopoly," Discussion Paper Series 124, School of Economics, Kwansei Gakuin University, revised Dec 2014.
    3. Tetsuya Shinkai & Ryoma Kitamura, 2018. "Product Line Strategy within a Vertically Differentiated Duopoly under Non-negativity Outputs Constraints," Discussion Paper Series 179, School of Economics, Kwansei Gakuin University.
    4. Ryoma Kitamura & Tetsuya Shinkai, 2014. "Cannibalization may Allow a Cost-inefficient Firm to Earn more than a Cost-effcient Firm in a Duopoly with Two Vertically Differentiated Goods," Discussion Paper Series 113, School of Economics, Kwansei Gakuin University, revised Jan 2014.
    5. Tetsuya Shinkai & Ryoma Kitamura, 2021. "How Do the Relative Superiority of a High-quality Good and Cost Inefficiency between Firms Affect Product Lines in Multiproduct Firms?," Discussion Paper Series 230, School of Economics, Kwansei Gakuin University.
    6. Kitamura, Ryoma & Shinkai, Tetsuya, 2015. "Product line strategy within a vertically differentiated duopoly," Economics Letters, Elsevier, vol. 137(C), pages 114-117.
    7. Tetsuya Shinkai & Ryoma Kitamura, 2019. "Production Substitution of Goods Within and Between Firms in a Multiproduct Duopoly," Discussion Paper Series 197, School of Economics, Kwansei Gakuin University.
    8. Francisco Martínez-Sánchez, 2016. "Versioning Goods and Joint Purchase: Substitution and Complementarity Strategies," Prague Economic Papers, Prague University of Economics and Business, vol. 2016(5), pages 577-590.
    9. Morita, Hodaka & Nguyen, Xuan, 2021. "FDI and quality-enhancing technology spillovers," International Journal of Industrial Organization, Elsevier, vol. 79(C).
    10. Rasha Ahmed & Kathleen Segerson, 2007. "Emissions Control and the Regulation of Product Markets: The Case of Automobiles," Working papers 2007-40, University of Connecticut, Department of Economics.
    11. Stefan Lutz & Mario Pezzino, 2012. "International Strategic Choice of Minimum Quality Standards and Welfare," Journal of Common Market Studies, Wiley Blackwell, vol. 50(4), pages 594-613, July.
    12. Nguyen, Xuan & Sgro, Pasquale & Nabin, Munirul, 2014. "Licensing under vertical product differentiation: Price vs. quantity competition," Economic Modelling, Elsevier, vol. 36(C), pages 600-606.
    13. Yurko, Anna V., 2011. "How does income inequality affect market outcomes in vertically differentiated markets?," International Journal of Industrial Organization, Elsevier, vol. 29(4), pages 493-503, July.
    14. Ahmed, Rasha & Segerson, Kathleen, 2011. "Collective voluntary agreements to eliminate polluting products," Resource and Energy Economics, Elsevier, vol. 33(3), pages 572-588, September.
    15. Belleflamme,Paul & Peitz,Martin, 2015. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9781107687899, January.
    16. Giulia Ceccantoni & Ornella Tarola & Cecilia Vergari, 2023. "Tax and pollution in a vertically differentiated duopoly: When consumers matter," Metroeconomica, Wiley Blackwell, vol. 74(2), pages 416-445, May.
    17. Dorothée Brécard, 2013. "Environmental Quality Competition and Taxation in the Presence of Green Network Effect Among Consumers," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 54(1), pages 1-19, January.
    18. Hodaka Morita & Xuan Nguyen, 2012. "FDI and Technology Spillovers under Vertical Product Di erentiation," Discussion Papers 2012-19, School of Economics, The University of New South Wales.
    19. Ryoma Kitamura, 2015. "Cost Reduction can Decrease Pro t and Welfare in a Monopoly," Discussion Paper Series 133, School of Economics, Kwansei Gakuin University, revised Jul 2015.
    20. Garella, Paolo G. & Lambertini, Luca, 2014. "Bidimensional vertical differentiation," International Journal of Industrial Organization, Elsevier, vol. 32(C), pages 1-10.

    More about this item

    Keywords

    Multi-product rm; Duopoly; Cannibalization; Vertical product di¤erentiation;
    All these keywords.

    JEL classification:

    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • 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
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality

    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:kgu:wpaper:134. 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: Toshihiro Okada (email available below). General contact details of provider: https://edirc.repec.org/data/dekgujp.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.