• Scientific reports · Jul 2017

    Appearance of Unstable Monopoly State Caused by Selective and Concentrative Mergers in Business Networks.

    • Hayato Goto, Eduardo Viegas, Henrik Jeldtoft Jensen, Hideki Takayasu, and Misako Takayasu.
    • Department of Computational Intelligence and Systems Science, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Yokohama, 226-8502, Japan.
    • Sci Rep. 2017 Jul 11; 7 (1): 5064.

    AbstractRecently, growth mechanism of firms in complex business networks became new targets of scientific study owing to increasing availability of high quality business firms' data. Here, we paid attention to comprehensive data of M&A events for 40 years and derived empirical laws by applying methods and concepts of aggregation dynamics of aerosol physics. It is found that the probability of merger between bigger firms is bigger than that between smaller ones, and such tendency is enhancing year by year. We introduced a numerical model simulating the whole ecosystem of firms and showed that the system is already in an unstable monopoly state in which growth of middle sized firms are suppressed.

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