Red Hat have done a lot of the productionising and packaging and got it running at a lot of companies.
I don't fully agree that Red Hat has more ownership of the success of Kubernetes, though. They may have been necessary, but by no means sufficient. The aura of Google has probably had far more importance in the momentum to date.
CNCF owns the Kubernetes project. Google provides a lot of resources, and so does Redhat. Both are heavily involved in k8s, and both contributed significantly to its success.
I don't fully agree that Red Hat has more ownership of the success of Kubernetes, though. They may have been necessary, but by no means sufficient. The aura of Google has probably had far more importance in the momentum to date.