Just had to say to a customer:
"There's no 'so' you cannot do that and that's an end to it."
I could literally feel myself cringe as I said it but I had no choice, the customer was desperately trying find a way to cheat Microsoft and I'm not being a party to that. I've seen too many companies fined heavily over the years for software licensing issues.
Some software licensing is a dark art.
I remember a 3 day software course where nearly a whole day was spent on licensing. INVU, I think it was.