The problem with the windows idea, is that windows is very resource intensive in comparison to linux based OS, which can run in very light hardware, investors and CEO's don't seem to understand that physically this is where windows has always failed, in reality the MS windows phones are not much different then phones with other OS, except windows is no good for these hardware devices.

I'm quite sure if the windows mobile OS had potential, that we all would be trying it out.

The only positive thing i can think of such merger would be to kick windows oriented companies like vmware to start to release so much needed apps like VMware for mobiles, amongst others, all share holders oriented.