Monopolies
1) What MS proved at least was the theory, that a (near) monopoly stalls innovation. At the highest point of IE marketshare, the MS IE team was cut back dramatically.
2) Enterprises use IE6 based apps a lot and due to incompatibility with IE7 and IE8 these apps will stay for a long time. To be fair, the effort to be more compliant with stadards made MS a better citizen, but broke many Enterprise applications on the other side.
Too bad.....
Biting the hand that feeds IT
