The balance of power...
... is certainly shifting: "may we live in interesting times"
I also wonder how much resistance there was before Microsoft "officially" endorsed Monogame as XNA's successor as well (or, more likely "XNA's dead... wait, what do you mean all our indie XNA devs are now going to switch to Monogame and publish on iOS and Android? Oh shiiiiiii......")
It looks like Microsoft - despite the best efforts of some - are beginning to realise that things cannot continue as they were and they've got to change their ways to survive. And survive, I hope they do - I have no desire for the next big IT monopoly to be the ones who decided that photographing huge swathes of the world - and nicking all the wifi details they could while at it - was a good idea.