Quantifying Market Power and Business Dynamism in the Macroeconomy

Simon Mongey, Jan De Loecker and Jan Eeckhout

No 1251, Working Papers from Barcelona School of Economics

Abstract: We propose a general equilibrium model with oligopolistic output markets where two channels can cause a change in market power: (i) technology, via changes to productivity shocks and the cost of entry, (ii) market structure, via changes to the number of potential competitors. First, we disentangle these narratives by matching data on markups, labor reallocation and costs, finding that both channels are necessary to account for the data. Second, we show that changes in technology and market structure yield positive welfare effects through reallocation and selection, but off-setting negative effects from dead-weight loss and overhead. Overall, welfare is 9 percent lower in 2016 than in 1980. Third, the changes we identify explain and decompose cross-sectional patterns in declining business dynamism, declining equilibrium wages and labor force participation via reallocation toward larger, more productive firms.

Keywords: Endogenous markups; labor share; technological change; market structure; business dynamism; market power in the aggregate economy; reallocation; wage stagnation; passthrough (search for similar items in EconPapers)
JEL-codes: C6 D4 D5 L1 (search for similar items in EconPapers)
Date: 2021-04
New Economics Papers: this item is included in nep-com, nep-cwa, nep-dge and nep-mac
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (32)

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Related works:
Working Paper: QUANTIFYING MARKET POWER AND BUSINESS DYNAMISM IN THE MACROECONOMY (2021)
Working Paper: Quantifying Market Power and Business Dynamism in the Macroeconomy (2021)
Working Paper: Quantifying market power and business dynamism in the macroeconomy (2021)
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