Is Vista a dead end for Microsoft?

PC columnist John C Dvorak has posted an interesting column about the future of Microsoft. He points out how they are no longer innovating and improving, but trying to keep their operating system functional and up with the competition.

"While Microsoft, because of its sheer size, is no more doomed than IBM ever was, it's never going to be a leader again, if the Vista saga is any indication. What we are witnessing now is nothing more than upgrades and maintenance."