"Just do X" is advice that is almost always less than useful.

IT departments that use Horizon with instant clones and have several compute clusters with AutoHA, DRS and NZX, a sprinkle of vSAN etc. etc. etc. will take a week just to translate all of what they need to do to Proxmox terms - and then a month to figure out if Proxmox or XCP-NG can even do all that.

But if the 10x price increase is actually typically, they might actually look into it. Will still take years to migrate.

As much as I love Proxmox, it’s not a VMware replacement unless you’re a small shop with knowledgeable people. There is a huge gap between “homelan where I can play with ZFS” to “enterprise-grade workload management and redundancy” that it only partially addresses.

Maybe in a few years. I know that if I was working there, I would be trying to close as much of that gap as possible while the migration opportunities are still around.