(1)規(guī)模經(jīng)濟(jì);(2)產(chǎn)品差異優(yōu)勢;(3)資金需求;(4)轉(zhuǎn)換成本;(5)銷售渠道(6)與規(guī)模經(jīng)濟(jì)無關(guān)的成本優(yōu)勢