This could just as likely be due to the fact that all development has moved to a shared core. There isn't a "Windows Mobile" or "Windows Phone"OS anymore. It is now just Windows and it can be used on different form-factors.
Of course, you can continue to assume the worst since that seems to be what people want to do. We are a society where the glass is always half full. Just realize that history has shown companies to abandon projects based on projected adoption rates. If you keep acting like Chicken Little, you could be the one who causes the sky to fall.