When people point out that Google is behind Angular, they fail to mention that the level of investment is nowhere near that of Facebook in React. I've been loving using React. Building in components is fantastic, and it just feels like writing Javascript. That's a win in my books.
If Google was as invested in Angular as Facebook was in React, they would probably have gone with a more gradual, methodical approach to improving the framework (like the Ember team did). And until that changes, there is very little stopping them from doing another mostly incompatible rewrite in a few years.
As it stands, Angular 2 is closer to a completely new framework roughly inspired by Angular 1.x than a new version of Angular.