Schumpeter discusses the importance of innovation and new firm entry in a capitalistic economy as a means to "creatively destruct" oligopolies and generate new economic wealth. He warns of R&D becoming the arena of professional engineers in large corporations; Schumpeter feared the obsolescence of entrepreneurship would result in an increasing concentration of wealth among large corporations and toward socialism.
Using a longitudinal data base of U.S. corporations over the period 1961--1980, this paper statistically tests several aspects of Schumpeter's analysis. Overall our results give some support to Schumpeter's creative destruction hypothesis, though there exists some sensitivity to the measure of size used. We find most of the firms exiting the ranks of the largest 500 firms (as measured by assets) are those with ranks in the 401--500 range; there is also evidence of "churning" as the same firms enter and exit the top 500 over time. Additionally, we find that merger has gained prominence as the reason why firms exit the top 500. Among our conclusions is that further work is needed on the role of mergers in the growth --and decline --of entrepreneurial firms.