Microsoft has Lost $ 400 Billions Microsoft has lost $ 400 billion by leaving the smartphone market. Bill Gates Speaking to Venture Capital company Village Global, Bill Gates admitted that he had failed to build a standard non-Apple phone platform over Google's. Bill Gates says his biggest mistake is not to build Microsoft's Android-like platform. Bill Gates says if he does that, Google's $ 400 billion will come to Microsoft. Many say it was Steve Ballmer who didn't take it seriously. Steve Ballmer did not take Apple's iPhone seriously, they laughed at it. Steve Ballmer believed that expensive phones without keyboards would not suit business customers. Microsoft then introduced Windows Mobile. This was a smaller version of Windows available for PC. Shortly after the iPhone came, Google released Android. It turns out that people prefer All-Screen OS. Microsoft tried to join the race from Windows Phone 7 in 2010 but has had plenty of time yet. Andro...