I don’t really consider OpenShift in the same category. VMWare and its enabling software such as vSphere and vCenter are in another category than OpenShift to the point that there is a symbiotic relationship between VMWare and Dell in the corporate/enterprise setting
I can confirm this, from my experience. Many organizations have foregone ms in lieu of redhat and oracle, and redhat is slowly injecting openshift where they can fit it.
There's also Harvester "open source hyperconverged infrastructure" https://harvesterhci.io/
Or some Xen spinoff like https://xcp-ng.org/
Smaller shops are migrating to Proxmox.