Under perfect competition and constant returns to scale, firms producing homogeneous products set their prices at their marginal costs which also equal their average costs. However, the departure from these standard assumptions has important implications with respects to the derived theoretical...

Using data for 20 countries during 1975–2011, this study provides new evidence on the association between the lack of competition, measured by an increase in markups, and income inequality. We find that an increase in markups is positively associated with rising income inequality. More...