Their consumer cards are the entry point for many researchers and students though, so it pays off eventually when they become engineers working with the expensive enterprise cards.
Great point - an analogy comes to mind: MSFT (and Adobe) were totally okay with (and even encouraged) students pirating Windows/Photoshop etc in non-Western countries in the hopes they grow up and carry that knowledge in a future legal venture.
They were right.
This is the hardware equivalent of that.
Only until CUDA is replaceable though: and who is gonna do that? Intel better carry through their promises in this regard.