Why is Microsoft mobile operating system fragmented?

Tencent technology in the early morning of December 2 compiled Microsoft in the mobile Internet ecosystem status, far behind Google (Weibo) and Apple. A recent foreign-media analysis points out that the fragmentation of mobile operating systems stems from the mistaken understanding of mobile computing by Ballmer and Microsoft executives, and what Microsoft needs to do now is to follow Google and Apple to unify the flat and mobile operating systems. Earlier, a senior Microsoft had said it would end the coexistence of three operating systems on mobile devices. It is widely believed that the WINDOWS-RT system, which has been discarded by tablet manufacturers, will be "deleted". Microsoft, Google and Apple, the three giants, all have two sets of operating systems, respectively, for computers and mobile devices, but Microsoft is unique in the mobile device, there are three systems, that is, for the Intel chip tablet Windows8-pro, the arm chip tablet windows-rt, and Windows-phone8 for mobile phones. On the ARM chip platform, Microsoft has launched a system for tablet and mobile phones, respectively. The design has to do with Microsoft CEO Steve Ballmer's understanding of personal computing. At the Microsoft D8 Conference in 2010, Mr. Ballmer said there would be a computing tool to solve any problem in the future, and a computing device that could be put into a pocket. Mr. Ballmer said there was a fundamental difference between the devices that could be put in pockets and the devices that could not be put in a pocket. In user behavior, the two devices are very different. In Mr Ballmer's view, the use of tablets and mobile phones was so different that it was necessary to develop two systems to meet each other. This eventually led to the fragmentation of the Microsoft mobile operating system. How will Microsoft solve the future? In fact, there has been a consensus in the industry that the abolition of the WINDOWS-RT project, with Windows-phone (the future may be renamed) a system to meet the tablet and mobile phones, just as with Google Android and Apple iOS. At present, all manufacturers, such as HP, Dell, have abandoned the failed WINDOWS-RT system, and only Microsoft and Nokia, which will join Microsoft, are still producing windows-rt tablet. In addition, Microsoft in the previous WP upgrade, began to support the growing resolution and screen, is now compatible with seven or eight-inch tablet, analysts are expected next year will be compatible with 10-inch tablet, so WP will become Microsoft unified Tablet and mobile phone system, then, Windows-rt is likely to be another short-lived product of Microsoft's history.