Comment by judge2020

Enough billion dollar companies put their weight behind Docker that you'd think someone big is already running Docker hub pushing people to use their paid offerings, but that's not the case. Google created Kubernetes which is almost always used along with Docker, but they don't directly invest in Docker, Inc (at least, based on Crunchbase) and run their own container registry at gcr.io. The same goes for Amazon and Azure where their customers are increasingly moving to Docker instead of VMs, yet none of them directly back the company.