قدیمی تر و کندتر: کمبود راه اندازی پایدار تاثیر بسزایی بر رشد بهره وری کل دارد

Declining firm entry and the aging incumbent firms have meaningful implications for sluggish U.S. aggregate productivity growth. We provide a framework to characterize the contributions to industry productivity growth across the firm age distribution then apply it to firm-level Census data. Several findings emerge: the relationship between firm age and productivity growth is downward sloping and convex; the magnitudes are substantial but fade quickly; selection and reallocation predominantly drive higher productivity growth of young firms. Our results suggest a cumulative drag on aggregate productivity of 3.1% since 1980 and are expanded upon with an IV strategy and standard model of firm dynamics.