Google's Polymer [0] is probably closer to React than Angular. Angular's more of an application framework. Polymer's more of a Web Components[1] framework, which I think is closer to what React is doing.
Long term I can see web components/polymer shims being preferred over React, but not till the major browsers catch up. Like the parent says, Facebook is deeply invested in making React work and it really shows. Angular/Polymer always seems more r&d/experimental to me, which is great but not for people who want to do production work.
[0]: https://www.polymer-project.org/1.0/ [1]: https://developer.mozilla.org/en-US/docs/Web/Web_Components