The ``Matthew Effect'' and Market Concentration: Search Complementarities and Monopsony Power

Fernández-Villaverde, Jesús, Federico Mandelman, Francesco Zanetti and Yang Yu
Authors registered in the RePEc Author Service: Jesus Fernandez-Villaverde

No 15788, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: This paper develops a dynamic general equilibrium model with heterogeneous firms that face search complementarities in the formation of vendor contracts. Search complementarities amplify small differences in productivity among firms. Market concentration fosters monopsony power in the labor market, magnifying profits and further enhancing high-productivity firms' output share. Firms want to get bigger and hire more workers, in stark contrast with the classic monopsony model, where a firm aims to reduce the amount of labor it hires. The combination of search complementarities and monopsony power induces a strong ``Matthew effect'' that endogenously generates superstar firms out of uniform idiosyncratic productivity distributions. Reductions in search costs increase market concentration, lower the labor income share, and increase wage inequality.

Keywords: Market concentration; Superstar firms; Search complementarities; Monopsony power (search for similar items in EconPapers)
JEL-codes: C63 C68 E32 E37 E44 G12 (search for similar items in EconPapers)
Date: 2021-02
New Economics Papers: this item is included in nep-com, nep-cwa, nep-dge, nep-mac and nep-mic
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (30)

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https://cepr.org/publications/DP15788 (application/pdf)

Related works:
Journal Article: The “Matthew effect” and market concentration: Search complementarities and monopsony power (2021)
Working Paper: The "Matthew Effect" and Market Concentration: Search Complementarities and Monopsony Power (2021)
Working Paper: The "Matthew Effect" and Market Concentration: Search Complementarities and Monopsony Power (2021)
Working Paper: The “Matthew Effect” and Market Concentration: Search Complementarities and Monopsony Power (2021)
Working Paper: The "Matthew effect" and market concentration: Search complementarities and monopsony power (2021)
Working Paper: The "Matthew Effect" and Market Concentration: Search Complementarities and Monopsony Power (2021)
Working Paper: The “Matthew Effect” and Market Concentration: Search Complementarities and Monopsony Power (2021)
Working Paper: The “Matthew Effect” and Market Concentration:Search Complementarities and Monopsony Power (2021)
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