Re: A thought.
"Micro-shaft would stop it with the CPU core limits in the OS. "
Well the limit of 256 Cores in Windows 10 Pro should cover most uses.
" NT4 had a 4 core limit (server OS also) in the base OS"
Not correct. There was never a core limit. The Enterprise OEM version supported up to 32 CPUs.
"I think you had to pay a license for additional cores"
Nope. That's now the case in Server 2016, but not before then. And if you are going to license on scalability, then these days by cores makes more sense than by CPUs.