> Just because XP is their most popular OS doesn't mean that they need to keep supporting it.

Ballmer said "we're embracing HTML5". If they want to embrace this technology then yes, they do need to bring it to their older, more popular OSs. Otherwise, they're just putting in a halfassed, minimal effort to it.

All other HTML5 browsers run on Windows XP. Microsoft is the only company to produce an HTML5 browser that doesn't run on the world's most widely used OS, which happens to be made by them.

That's absurd. Definitely not "embracing".