Microsoft is Dead 19 years ago
Short sighted. Although Linux is making significant rounds for servers in the corporate world Microsoft is still the office PC leader. web 2.0 will never break into this coporate niche just due to the flow of information out of the secure office. However this is not to say the application can not come IN house. This is how they must be sold to corporations. That and the price of training new hires on the linux based platform with web apps.
If enough companies train enough people then the "we use microsoft because everyone knows it" excuse will be out the window.