Embrace and Extend

Microsoft loves open standards. They love open standards so much, that any time they see one that might be useful (whether in a technological or marketing sense), they rapidly adopt the standard. And then, because they love it sooo much, they improve the standard with magical Windows pixie dust.

I'm sure once Microsoft has gained this level of open source acceptance, they'll announce an even more open than open software license (You'll

be able to do anything to want to the code as long as you are very careful to never let anyone find out.) and be completely cross platform compatible (Meaning it can run on any version of Windows currently supported by Microsoft.).