You still have to pay for power and water. Those are not insignificant costs.

> AI accelerators used in DC are not really "graphic cards" any more, you ain't running gaming on it

I think the lighter 40 series cards like L40 still have OK graphics features. But otherwise yeah, after the Ampere generation graphics features went down the drain. The A100 and A40 cards can do graphics well but it already makes no sense in terms of power-to-performance ratio.