Because of the GPU shortage, game makers couldn't rely on enough users having the best/latest card, so now there is not much point in having, say, a RTX 3090, where a 3080 performs as well for most non-mining purposes.
Now, what if crypto enters a crisis (or ETH switches to PoS, which is less likely), and then the next generation of GPUs has almost no demand at the inflated triple-digit prices. That's going to be a huge hit to its market cap