IE is so embedded in a lot of corporate machines that it will never simply go away. IE9 is good enough that in my experience even large users (like universities and large companies) are moving away from offering alternative browsers. Deploying only IE to thousands of machines is a lot easier than deploying Chrome or Firefox.
Consumer traffic may make the bulk of the web, but the actual financial contribution towards web development in terms of dollars-per-user is far, far greater for corporate traffic.
IE may be less relevant for consumer traffic, but it is just as relevant for corporate traffic. Given that corporate use is worth so much more financially, it won't go away. The IT department in a big company doesn't care what the cool kids are doing.
Consumer traffic may make the bulk of the web, but the actual financial contribution towards web development in terms of dollars-per-user is far, far greater for corporate traffic.
IE may be less relevant for consumer traffic, but it is just as relevant for corporate traffic. Given that corporate use is worth so much more financially, it won't go away. The IT department in a big company doesn't care what the cool kids are doing.