Comment by vintermann

Jokes aside, I think a lot of the famous Google internals that became public (Tensorflow, Kubernetes, Bazel, Angular), although I heard everyone say they worked so much better inside Google than outside it, had issues. And the Facebook-supported rivals were often just so much more pleasant to work with that you couldn't ignore it. For all else that was bad about Facebook, for a few years they were pretty good at denying Google technical hegemony.