That's correct. We have cmp line too. What i mean is gaming gpu should not even mine a single coin.This existed long back, I remember seeing 10 series without any IO, those card meant for mining only. Just google for 1060 mining variant you will find all details. In fact LTT made video on it - how to game on mining card
That's is correct. But there can be another ways to make a segregation between both.This is generally anti-consumer policy. Locking capable hardware behind software walls is considered gimping a product line to encourage selling another of the same. It doesn't bode well with investors and consumers.
Also mining-only GPUs are pure e-waste once they are inefficient and phased out.