Two of the most robust results from dynamic competitive models of industrial organization suggest that higher-sunk-cost industries should exhibit higher intertemporal variability in the market value of their firms and lower intertemporal variability in the size of their industries. These...

Dynamic competitive models of industry evolution predict higher variability of firm value over time and lower variability of firm activity over time in industries where sunk entry costs are higher. These predictions have done well empirically. Here we extend the theory to allow an additional...