Re: No surprise here
I don't think Microsoft is trying to dump the phone business, rather it's using and neglecting the Lumia brand as a reference design in the hope that OEM's will start making Windows phones without the fear that Microsoft will make it a Lumia only play. This would allow Microsoft to get out of the phone hardware business yet still take a growing share of the phone OS business.
Whether the current tiny trickle of non Lumia Windows phones will actually turn into a flood remains to be seen.
Biting the hand that feeds IT
