In contrast to what several papers have argued recently, we show that firm heterogeneity fosters agglomeration of economic activity. If firms are more similar with respect to their total factor productivity, each company faces a lower propensity to export. This renders the home market more...

This paper analyzes the impact of public input competition in a New Economic Geography framework. It is shown that regional competition yields an overprovision of public inputs if trade costs are sizable while it leads to underprovision if regions are highly integrated. Moreover, public input...