Proxmox will probably be something I check out in the near future. Looks interesting.
This actually pisses me off as to what Broadcom is doing. I feel like buying hardware (if I can help it) without the use of any Broadcom chipset. Does this sound like a monopoly though? Broadcom is EVERYWHERE!
I haven't bought Broadcom anything for years, if I can help it. Sometimes, there is no other option. Latest reports from the field are renewals are 9x-10x what they were previously, and there is no negotiation. Imagine a smaller shop going from a 100k renewal to 900k-1MM.
Proxmox is sort of a pain in the hoo-hah. Nothing is as easy as it was in ESXi, and it's just as easy to run a standard Linux VM with KVM for a single node. The only real benefit is the addition of a web UI for console access.
Broadcom is a holding company and there are competitors to their products. Instead of Brocade, you have Emulex HBAs or Cisco FC switches. Instead of their NICs, you have Intel, nVidia, or Marvel.
I spoke incorrectly on Hyper-V earlier. It's replacement is Azure Stack HCI (short for HyperConverged Infrastructure). That's not free either, even for home use, so the choices are getting slim.