(1)規(guī)模經(jīng)濟(jì); (2)產(chǎn)品差異優(yōu)勢(shì); (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(shì)