为何出租车司机没有想到建立打车服务Uber?为何美国最大实体书店Barnes&Noble没有想到建立亚马逊?为何好莱坞没有想到打造在线影片租赁提供商Netflix?为何万豪国际集团没有想到建立旅行房屋租赁社区Air Bn B?对于上述四个问题中的主体以及其他无数在数字化颠覆大潮中被取代的公司来说,第一个原因是他们已经建立起“现金牛”(cash cow),即他们开发的产品或服务在收入或利润 Why taxi drivers did not expect to set up a taxi service Uber? Why the largest US physical bookstore Barnes & Noble did not think the establishment of Amazon? Why Hollywood did not think of creating online video rental provider Netflix Why Marriott International did not think of the establishment of travel rental housing community Air Bn B? The first of the four above-mentioned issues, as well as the myriad of other companies that have been replaced in the digital subversive tide, is that they have established “cash cow” -the product or service they are developing Revenue or profit