OK, so the not being "full featured" is referring more to the ecosystem than the hardware and operating system. I can buy off on that. In fact, when my wife first started her business as a professional photographer we were all Windows and Linux. I recommended for Photoshop she buy a Mac instead of using Windows. Both operating systems were quite capable but for professional support through her peers...the Mac is where it is all at. In fact, I know of very few professional photographers that don't use Macs.
I think one of the problems we have here is it's been too long since we've seen a third party introduce a viable alternative to Windows and OS X. As someone that remembered a world before either operating system was around...both Windows and OS X were initially wrongly discredited for not having an adequate software library. If there is enough interest by developers, Chrome OS will have its day. And again, that's why I say this Chromebook Pixel isn't just really geared toward you and me...it's geared toward developers and the people that can see and buy into the vision that Chrome OS can do what other Linux distributions have been unable to do before.