the problem with IE is that they don't release updates that much, instead of being a separated and dedicated service, IE is like an add-on to Windows.
While Firefox has gone to 20+ and Chrome has reached 30+, IE just passed through its 11th version. So obviously they aren't going to keep up with the updates.
It baffles me how every time you try to say something concerning Web Development, you seem to be incorrect. While IE does come pre-installed on Microsoft Windows, the time the OS actually needed IE to function has gone past a very long time ago. In fact - the European Union forces Microsoft to offer alternatives for Internet Explorer after installing Windows. IE has its own development team inside of Microsoft, just like Chrome has inside of Google.
They also do provide updates beyond the major updates - there are more then 11 versions. Chrome simply creates a new version for every little thing - back when they didn't they _still_ were far more compatible then IE was thus we can assume that raw amount of updates isn't the reason. A simple look at the HTML5 compability lists will also tell you that Chrome and Firefox actually only update their compability in a meaningful way every few versions.
Previously Microsoft has strongly pushed their own proprietary web standards, technologies and so on in an effort to "harden" the web against foreign browser penetration. Since that strategy has clearly been proven a failure they have been making rapid leaps in speed and compatibility. IE isn't nearly as bad and annoying as it used to be.
When a browser is added on to every PC ever made, and yet has to advertise itself on TV, it should throw up some red flags at how bad the product is if it can't get enough users on it despite being on every computer in existence.
Not in Europe anymore. Eat that you texan mother.... you know.