Yeah the above is someone who can either greenfield because they work for a new shop or is deep in the kube-aid.

Most buisnesses just need your stated features. Some stand alone VMs with HA that makes them server independent and let you snapshot/back them up with ease. Slot commodity servers in a room somewhere, wander off to do more important things.

The good news is that proxmox is already there, if a bit more crunchy to deploy. It's got integrated ceph to work as a backend for HA/VSAN, built in snapshots and a separate backup appliance that sports Veeam style features. It has a simple config language that could compete with powercli if that is a current vmware use case. Looks like it even supports VDI with Intel's enterprise gpus, although that is early days.