Google's incapable of sticking to anything good. Nobody gets promoted at Google maintaining a system. So somebody inevitably gets the idea to make a 2.0 which isn't backwards compatible, enabling them to do all sorts of bold promotion-worthy innovation. And inevitably 2.0 isn't very good. Even worse, it makes the entire ecosystem confusing and unhealthy.

If every other framework failed because of <insert reason here>, that does indeed sound like React won due to its own merits.