Microsoft can keep it's huge Windows and Office market share as far as I'm concerned. It's kind of comforting to know they're therebig enough to keep Apple on its toes, but not quite competent enough to threaten the Mac.
BUT
Oh how I wish Internet Explorer would just die!! That alone is holding the web back by years and making many a web developer go prematurely grey. This sums it up quite nicely
http://www.deepbluesky.com/blog/-/browser-support-for-css3-and-html5_72/
I really wouldn't wish so much ill on Microsoft if they would just give up on IE, or make it another WebKit based browser. I don't see that happening somehow, so it's up to Windows users to boycott the beast. I don't see that happening either, since most people have no idea just how backwards IE is
because developers go to such lengths to make things work in it.
If only someone could strike IE a deathblow, like Apple have almost done to Flash by not supporting it on iOS devices