规模经济和范围经济至少在进入到某一增长阶段之前都会存在，而向外扩张通常是唯一的扩大规模之路 — — 因为国内市场早已饱和了。
And, at least until a certain stage of growth, economies of scale and scope beckon, with expansion abroad often the only way to increase size, given already-saturated domestic markets.