Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
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 predictions have done well empirically. This paper argues on theoretical and empirical grounds that depreciation generates countervailing effects. © 2012 The President and Fellows of Harvard College and the Massachusetts Institute of Technology.