We develop an overlapping generations model, where firms (as consumers) have a two-period life, investing in R&D during the first period and competing in the product market in the second period. The number of firms is endogenously determined and the set of successful firms by a Bernoullian...

“Empirical evidence shows that many markets are characterized by a few large firms that behave strategically, while cohabiting with a competitive fringe of small firms. Thus, there is a need to consider general equilibrium settings that account explicitly for strategic interactions among big...