My view of Microsoft, and I'd be interested to hear if it's bullshit from people who have worked there, is there isn't such an entity.

The dev tools and .NET team actually like Linux, the Windows team hate those guys, the Office team hate everyone, the Skype team hate their lives, the Nokia team, well...

Expecting a single determined vision from Microsoft isn't rational. It's multiple business units who don't really coordinate and just happen to share a logo.

Again I've only formed this view from hints and allusions but it seems to explain a lot.