Given that is a sentiment I hear, and feel, a lot, it's unlikely the prices will come down much. It seems there is a lot of demand at lower prices.

Even if NVidia crashed and there ends up being an oversupply of GPUs or TSMC fab slots, this doesn't change that OpenAi and Google still need memory for their own hardware accelerators, so the price of boards wouldn't go down by much

Crypto, then AI. Demand for GPU's has skyrocketted, and the number of foundries hasn't (much to the chagrin of every nation state).

Unfortunately these are server sku. I don't think you'd have good odds of getting a video signal out of them.

Same. I replaced the pads and paste on my now ancient RX 580 in the hopes of surviving to the next time prices are affordable.

For anyone wanting to do so - you can! You have to make sure you nail the pad thickness though. That can be tough because it can have changed between revisions of the same card. Thankfully, AI is pretty good at combing through past data to figure out what you need. Also it voids your warranty.