The OCI standards make it so that it doesn't matter if you switch or not. Your images will work anywhere with any tool (aka Cloud Providers, Kubernetes, Podman, Buildah, etc.) Everybody has OCI compliant tools, even Docker - Docker founded the OCI.
"The Kubernetes project is excited to announce kocker, a new docker compatible image management tool. Kocker will support features you've been asking for, like non-priv-by-default containers, enhanced performance in k8s..."