Profit Raising Entry
研究发现，当在位企业边际成本不同且进入者像斯塔克尔伯格追随者时，进入可能提高低成本在位企业的利润，同时损害高成本在位企业，且所有在位企业的总产出可能增加。
Common wisdom suggests that entry reduces profits of incumbent firms. On the contrary, we demonstrate that if the incumbents differ in marginal costs and the entrants behave like Stackelberg followers, then entry may benefit the cost efficient incumbents while hurting the cost inefficient ones. And the total outputs of all incumbents may be higher under entry.