While we won’t go into the details about the computing landscape and its shifts, it is important to at least discuss briefly the drastic change that has occurred in computing and its implications on the mobile ecosystems in the coming days. Figure 4 plots out the share of the computing sales for 3 major platforms over the last four decades. Clearly, Microsoft dominated the eighties through mid-2000s. However, as soon as iOS and Android arrived, its share eroded rapidly. What Microsoft used to do to rivals is being done to its empire though its fate won’t be similar due to its extremely strong franchises and command over the enterprise business. While Microsoft has made the right moves, it has also made some key strategic errors in reading the market.