I understand the Surface, as many manufacturers had that dream of making The Next iPad Killer(tm) (which, incidentally, never seemed to materialized, until Amazon and Google stepped up, and even then, it's still all wobbly and transparent around the edges) but phones?
As of right now, the amount of handsets Windows Phone platform sends is small. So, while losing that tiny percentage might be irritating, I don't see how it would really anger partners. Aside from Nokia that was being systematically destroyed ever since Mr Elop arrived at the helm, everybody else keep WP products as a bottom drawer "if, for some unimaginable reason, it suddenly works out" back-up plan. Most money are in Android anyway.
So the only real negative consequence would be if MS decides to do another patent war, and everyone, even those who still have nominal WP models, would suddenly because a target. And even then, it'll turn into "how many extra fees do you have to force Android manufacturers to pay before users rebel".