a) not quite the same kernel. You appear to be unaware of what Google has done to the internals of linux

b) having an OS team has turned into a liability for Nokia. CEOs normally don't care about 'gutting' workforces. In fact, I predict that Elop will cut the 'deadwood' of the old company as soon as he announces whatever on Friday.

c) (edit) Elop has to pay attention to Oracle having sued Google over Java in Android.

No, this is Microsoft establishing a brand in the phone space via take-over of Nokia. Watch and see.