The point here is not to build an OS. The point is to improve web APIs so that web apps can compete with native ones, and do it in an open fashion so that all web browsers can implement the new APIs. ChromeOS has done some of this, but neither far enough nor openly enough (what ChromeOS extensions are working on becoming cross-browser standards?).

You sir have hit the nail on the head. The article reads as is they invented something revolutionary. I do think there is great potential in browser os market and a little competition is all that's required to pave the way for the 'next big thing'! This might just do good for the ChromeOS.