They already have that in Continuum: http://www.pcworld.com/article/3065895/windows/windows-continuum-how-i-survived-a-week-using-a-windows-10-phone-as-my-pc.ht

They already have that in Continuum: http://www.pcworld.com/article/3065895/windows/windows-continuum-how-i-survived-a-week-using-a-windows-10-phone-as-my-pc.html http://www.pcworld.com/article/3065895/windows/windows-conti... although I'm not sure it has a future given the shaky status of Win10 phones. As it stands right now, I can fire up Visual Studio and write a UWP app that'll run on phone, tablet, and desktop. The problem is that hardly anyone is using Windows Phones, and the smartphone market is one that MS hasn't had much luck with. Maybe the rumored Surface Phone will help if it ever materializes, but I'm skeptical.