Time path in innovation, imitation, and growth: the case of the motorcycle industry in postwar Japan

This study attempts to explore how an industry evolves over time based on a case study of the motorcycle industry in Japan from 1948 to 1964. Using individual firm data, we estimate the determinants of technology improvement and firm growth separately for different development phases, after controlling for the probability of firm survival. We find that the industrys rapid growth in the early phase can be explained by massive entry and the imitation of simple technologies, whereas sustained growth in later phases can be explained by innovations and subsequent imitations, as well as the exit of inefficient firms.JEL Classification: O14, L10, L62, N65 Correspondence to: Tetsushi SonobeWe are grateful to Kotaro Horiuchi, Shunji Tanaka, Katsuaki Nishino, Michael Kevane, Uwe Cantner, and two anonymous referees for their helpful comments and suggestions.