If Android, then Nokia would be in the same boat as HTC, Samsung, etc. are today...paying Microsoft to use Android and facing the prospect of going head to head with Google's house brand.

Note how Motorola and Sony do not pay Microsoft for using Android.

All the other Android vendors license Windows for some other area of their business. These two do not and Microsoft has no leverage to force them. (Yes, I know about Microsoft suing Motorola and Motorola suing Microsoft back).

You realize Sony is one of the top 10 largest manufacturers of PCs running Windows, right?

Up until February this year, Sony didn't manufacture any phones.

They used to, my first cellphone was a Sony, on Sprint network back in the late 1990's. Similar to this one:

http://i.imgur.com/aulgx.jpg