So why not just kill Windows Phone? “Windows Phone is small, relatively speaking. But absolutely speaking it still sells a lot of units. And they can’t not have an OS. So it’d be nice if they had more market on mobile, but having zero just topples the whole strategy.”
Now, where have I heard that before? - Oh yeah, I've been saying the same thing for years.
Microsoft can't not have a mobile/phone OS. I have to remind "mobile industry experts" when they say Microsoft should just scrap Windows Phone.
If you've built Windows Phone or Windows Store apps you can cross-promote them with AdDuplex to get more users.