Benkard, C. Lanier; Yurukoglu, Ali; Zhang, Anthony Lee - National Bureau of Economic Research - 2021
This paper uses new data to reexamine trends in concentration in U.S. markets from 1994 to 2019. The paper's main … contribution is to construct concentration measures that reflect narrowly defined consumption-based product markets, as would be … higher than previous results. Also in contrast with the previous literature, we find that product market concentration has …