For anyone curious about potential open-source migration options given the prospect of uncertainty around VMware pricing and support:

- xcp-ng[1] is a support-available fork of XenServer. Migration[2] can be performed using export to OVA format and subsequent import into the built-in Xen-Orchestra interface.

- proxmox-ve[3] provides a management UI for Linux Virtual Machine (LVM) and Linux Containers (LXC) hosts and provides various vendor migration guides[4]. Both commercial and community support[5] is available.

- The Xen Hypervisor[6] is capable of hosting x86 and ARM virtual hosts, and their project provides a VMware migration guide[7]

[1] - https://xcp-ng.com/

[2] - https://xcp-ng.org/docs/migratetoxcpng.html#from-vmware

[3] - https://www.proxmox.com/en/proxmox-ve

[4] - https://pve.proxmox.com/wiki/Migration_of_servers_to_Proxmox...

[5] - https://www.proxmox.com/en/proxmox-ve/support

[6] - https://xenproject.org/developers/teams/xen-hypervisor/

[7] - https://wiki.xenproject.org/wiki/Migration_from_VMware