That's a fantastic question, and it's really the crux of the whole thing, isn't it?
If it cost them enough sales to where they saw a notable decline in income, they would be forced to reduce prices.
However, if enough people still bought them anyways, they would not feel any need to change pricing at all. And they might even feel emboldened to raise them further in the future thanks to the new raised pricing expectations they've conditions consumers to have.
Basically, Nvidia's pricing is determined primarily by consumers. If consumers let Nvidia get away with being insanely greedy, then Nvidia will roll with that and they'd be silly not to. Doesn't mean some of us wont be extremely bitter about the situation, though. And yes, this means not just at Nvidia, but also all the people giving in and buying these GPU's at these absolute extortionate prices. Cuz they are literally ruining the GPU market for everybody, permanently. Nvidia has effectively raised prices by more than 100% in one generation, and they will gain the benefits of that for every generation going forward. They got like 10 years of normal pricing increases locked in in a single generation.