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Oligopolistic Competition, Technology Innovation, and Multiproduct Firms

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  • Jiandong Ju

Abstract

Firms’ proliferation behavior in a differentiated product market is studied using an oligopolistic competition model with multiproduct firms. The model has the following characteristics: (1) the elasticity of substitution across firm's own products and the elasticity of substitution across different firms are allowed to differ; (2) the product managers of the same firm behave cooperatively rather than independently; (3) the number of firms is determined by a free‐entry condition and so is endogenous. If the elasticity of substitution across the firm's own products increases, it is shown that the firm proliferates less and the number of firms in the market increases. If the elasticity of substitution across different firms increases, firms proliferate more and the number of firms in the market decreases.

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  • Jiandong Ju, 2003. "Oligopolistic Competition, Technology Innovation, and Multiproduct Firms," Review of International Economics, Wiley Blackwell, vol. 11(2), pages 346-359, May.
    • Handle: RePEc:bla:reviec:v:11:y:2003:i:2:p:346-359
    DOI: 10.1111/1467-9396.00387
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    References listed on IDEAS

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    Cited by:

    1. Ramon Caminal & Lluís M. Granero, 2012. "Multi‐product Firms and Product Variety," Economica, London School of Economics and Political Science, vol. 79(314), pages 303-328, April.
    2. Takahiro Ishii, 2021. "Technology sharing incentives for monopolistic firms," Discussion Papers in Economics and Business 21-05, Osaka University, Graduate School of Economics.
    3. Eckel, Carsten & Iacovone, Leonardo & Javorcik, Beata & Neary, J. Peter, 2015. "Multi-product firms at home and away: Cost- versus quality-based competence," Journal of International Economics, Elsevier, vol. 95(2), pages 216-232.
    4. Forslid, Rikard & Okubo, Toshihiro, 2023. "Trade, location, and multi-product firms," Regional Science and Urban Economics, Elsevier, vol. 100(C).
    5. Carsten Eckel & J. Peter Neary, 2010. "Multi-Product Firms and Flexible Manufacturing in the Global Economy," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 77(1), pages 188-217.
    6. Carsten Eckel & Leonardo Iacovone & Beata Javorcik & J. Peter Neary, 2016. "Testing the Core-competency Model of Multi-product Exporters," Review of International Economics, Wiley Blackwell, vol. 24(4), pages 699-716, September.
    7. Chrysovalantou Milliou & Joel Sandonis, 2018. "Manufacturer Mergers and Product Variety in Vertically Related Markets," Journal of Industry, Competition and Trade, Springer, vol. 18(1), pages 1-24, March.
    8. Grebel, Thomas, 2013. "On the tradeoff between similarity and diversity in the creation of novelty in basic science," Structural Change and Economic Dynamics, Elsevier, vol. 27(C), pages 66-78.
    9. Rikard FORSLID & OKUBO Toshihiro, 2024. "R&D Subsidies and Multi-product Firms," Discussion papers 24015, Research Institute of Economy, Trade and Industry (RIETI).

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