I have to agree. An OS change is a bit more to ask people then changing search engines or changing browsers- it changes the way they do everything on their PC. And it raises the question, of wether this new OS will deliver on anything but internet features. Windows, as we all know, as well as most other OS's out there, were "born" before the net and were made to work with the net. I think that Google is taking a bold step in building a OS around the concept of the net, and really it makes you wonder if they were paying attention when Sun Failed to re-introduce the "whole Server->Dumb terminal" topology that permeates around the time of the VAX-VMS; while we can't deny that it is an intriguing concept to build an OS around internet connectivity and features, it stands to reason that that connection will not always be there and in such times the OS would need to "cope"- other OS's simply work properly without the ability to connect. But what will google chrome do? Will it require a connection?
And as was said the only reason windows got driver support was because it became popular; people started asking for the drivers, and asking when the companies would have them; the question is, will the comparatively small number of google OS users be a loud enough voice to get the big peripheral vendors and motherboard manufacturs, such as Nvidia, ATI, ASUS, etc, to spend their money on drivers for Google Chrome; this is, of course, assuming that google chrome even supports the concent of drivers...
