Google seems to love to aim high, they also have a bucket load of faith in their upcoming Chrome OS. So much faith that they see it as a massive shift in computing use.
Chrome OS product manager Caesar Sengupta said in an interview:
"Do you really see these types of machines taking over from the Windows computers and Macs that many people use now?
I think it depends on the user and the user's behavior. In the long term and the fullness of time, absolutely. I think we will have failed if this doesn't become your default way of computing. But right now, we see hundreds of millions of users who live on the web. For many of these users, this will replace their machines immediately, especially as web apps get better."
Changes are coming... big changes.