Since you are apparently on an anti-proxmox crusade. Have you tried that iscus thing in enterprise? Like a very large scale production deployment?
Maybe if you read the comment I linked you'll find that that's precisely what we had with Proxmox and then migrated to LXD.
I am curious if anyone dares to use it in enterprise when people are even scared of proxmox or anything not VMware or MAYBE hyperV
I guess it depends on the kind of "enterprise" we're talking about. If your "enterprise" is somewhat of a provider / ISP they should be okay with LXD. A lot of service providers are running some form of LXC/LXD right now with very good results.
If by "enterprise" you mean your typical 400+ people company that does something not related to tech with an overworked and barely competent IT / infrastructure team, then the answer is: they won't move out of vmware ever.