Google hasn't been playing nice with Microsoft for a while (see how many Google apps are in the Windows Phone store, the issue where they locked out IE Mobile from viewing Google Maps, or how they treat Windows Phone trying to interface with YouTube). In a way it's nice to see Microsoft reaping what they've sown so long ago, but in another way it's incredibly frustrating from an end user perspective to be someone who likes Microsoft software (such as Windows Phone) and also enjoy using Google services like Maps and Youtube.
Google should be careful with how much they're pushing against Microsoft, especially with Microsoft's new market position versus Google. Microsoft is hardly the monopoly anymore.