You see? That's why IE features are always "broken" and half-implemented. If HTML etc. worked as defined in IE, people could abandon IE at will.
If IE worked fine people will abandon it? I think it's backwards.
And remember we are not talking only about implementing web standards, but also security issues, stability and velocity.
It's becoming less and less significant as OS X (which comes with Safari by default) and Firefox gain marketshare
I think Chrome will eat more IE market share than Firefox and Safari in the following years, mostly because Google's massive advertisement capacity.