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Defining a cluster market: The case of the Korean Internet portal service market

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  • Kwon, Youngsun
  • Cho, Shin

Abstract

In a cluster market, many related and unrelated products or services are sold. Examples of players in cluster markets are Tesco, Sears, Carrefour, Walmart, JCPenny, and Meijer. Because of some unique characteristics of cluster markets, studies of cluster market definition have been very scant. This paper reviews the market definition issues of cluster markets, proposes a statistical market definition method for cluster markets, and applies the method to the Korean Internet portal service market. The method uses all available information on cluster markets without oversimplifying market data. The results of analyses show that the Korean Internet portals can be seen as one market even though the third ranked player in the Korean Internet portal service market, Nate, is more akin to a specialty service provider, not a player competing in the cluster market squarely with Naver and Daum.

Suggested Citation

  • Kwon, Youngsun & Cho, Shin, 2015. "Defining a cluster market: The case of the Korean Internet portal service market," Telecommunications Policy, Elsevier, vol. 39(11), pages 921-932.
    • Handle: RePEc:eee:telpol:v:39:y:2015:i:11:p:921-932
    DOI: 10.1016/j.telpol.2015.08.009
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    References listed on IDEAS

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    1. Patrick Massey, 2000. "Market Definition and Market Power in Competition Analysis - Some Practical Issues," The Economic and Social Review, Economic and Social Studies, vol. 31(4), pages 309-328.
    2. Myron L. Kwast & Martha Starr-McCluer & John D. Wolken, 1997. "Market definition and the analysis of antitrust in banking," Finance and Economics Discussion Series 1997-52, Board of Governors of the Federal Reserve System (U.S.).
    3. Hanemann, W Michael, 1984. "Discrete-Continuous Models of Consumer Demand," Econometrica, Econometric Society, vol. 52(3), pages 541-561, May.
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    Cited by:

    1. Kwon, Youngsun & Kwon, Joungwon, 2017. "An overview of Telecommunications Policy's 40-year research history: Text and bibliographic analyses," Telecommunications Policy, Elsevier, vol. 41(10), pages 878-890.
    2. Teklemariam, Mekuria Haile & Kwon, Youngsun, 2020. "Differentiating mobile broadband policies across diffusion stages: A panel data analysis," Telecommunications Policy, Elsevier, vol. 44(8).

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