描きたい反実仮想を具体的にイメージしよう。 Igami, M. (2017). Estimating the innovator’s dilemma: Structural analysis of creative destruction in the hard disk drive industry, 1981–1998. Journal of Political Economy, 125(3), 798-847. Abstractにまとめられた反実仮想の結果は以下。 The results suggest that despite strong preemptive motives and…