They are plenty of powerful cards but they come at a higher cost than standard gaming cards. So it's probably not the cheaper option if you just want a good gaming card.
Especially as Quadro cards are more designed for professional work with high VRAM loads. So it's not designed for gaming and with lower clocks and limited cooling capacity for normal cases it's not ideal.
It is a bit of a waste of money to spend on that much memory when gaming will not utilize it.