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.
Definitely a thing with Angular and TF. Blaze works well within Google's monorepo for sure, but idk what it's like using Bazel outside. Never used Kubernetes in Google.
Tangent nit, but k8s was never a google-internal system. See https://research.google/pubs/borg-omega-and-kubernetes/