Across industries, this paper finds that the rate of investment-specific technical change (ISTC) is positively related to rates of entry and exit. This finding is consistent with industry dynamics along the balanced growth path of a general equilibrium, multi-industry model of the plant lifecycle, in which technology adoption is costly and the rate of ISTC varies across industries. Results are robust to allowing for structural change induced by technological progress. The model also generates lumpy investment as a result of technology adoption by incumbents.