I remember everyone proclaiming Google's mobile death way back when Android phones were starting to fill the shelves due to the 'App-Gap', but Google persisted, people bought their phones wanting to get away from Apple, and viola. The developers followed.
Now, W10m is about to come out, universal apps, and Microsoft is making a big push to make it as easy as possible for developers to port their code over to WUA. Where Windows mobile used to be a closed system, and the 'Nintendo Wii' of the Big 3, I think Win10m and the new Microsoft is poised to expand in a major way. Now, I don't pretend to know the future, but it looks bright from where I'm sitting. I haven't paid any attention to MS's mobile offerings in the past, but I'm hopping on board now because things are starting to look interesting and iOS and Android are as closed-off and gated as they've ever been.
I'm glad this site isn't just an echo chamber of MS sycophants telling each other how great our chosen platform is, but it sure is overly negative around here. Maybe you all have PTSD from MS's past failings in mobile, or something.