Market concentration: source of inflation at the local level?
By 2017, Puerto Rico had fewer registered establishments than each of the 50 states, adjusting for population, implying a higher market concentration in Puerto Rico, on average, than in the United States. These market shares have historically been divided among no more than 4-5 major competitors. Firms in concentrated industries, due to little competition, may raise prices in the face of increases in their costs above what they would rise in a competitive market.
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