Microsoft already doesn't matter anymore. Soon it will be dead. I said the first thing a few years ago, if you recall. The second I said would happen if there were a couple of features in ChromeOS, like NeatX and one other.
I haven't had the time to look into whether ChromeOS has the things I thought it needed to dominate the desktop but Scoble has come up with some brilliant reasons why ChromeOS has already won.
Google is playing a different game. Google Chrome OS is NOT about killing Microsoft or Apple.
What is it about? Developers, developers, developers, developers, developers.