摘要: In offering an answer to the question, “Who exits and why?”, I introduce a model relating decision remain in, or exit from industry, conditions of demand underlying technology. particular, argue that two elements technology are important — role scale economies in industry extent which technological information can be characterized by either entrepreneurial routinized regime. Based on evidence over 300 U.S. manufacturing industries, conclude process firm selection evolution tends conform revolving door, where bulk exiting businesses new entrants, else metaphor forest, incumbent establishments tend displaced entrants.