I agree with a lot of the above, but then there's:
> Docker is still maintaining the runtime on which orbstack, podman etc are all using, and all the cloud providers are using
I need to fact check that one. runc was donated by Docker to OCI a while back. And containerd was created under the CNCF from a lot of Docker code and ideas. podman is sitting on the RedHat containers stack, which has their own code base. Docker itself uses runc and containerd, and so do most Kubernetes deployments. Many of these tools go to containerd directly without deploying the Docker engine.
> containerd was created under the CNCF from a lot of Docker code and ideas
No. containerd was created by Docker, as part of a refactoring of dockerd, then later donated to cncf. Over time it gained a healthy base of maintainers from various companies. It is the most successful of Docker's cncf contributions. But it was not created under the CNCF.