Large AI companies' data centers use Nvidia enterprise GPUs that cost tens of thousands of $, such as the H100 Tensor Core which costs $40K. Of course, these GPUs are not in the sights of crypto miners, or at least I have never known anyone to use enterprise GPUs for their mining farms.
H100 sucks for mining at those prices, unless you get a coin with an algo that takes advantage of their design they are really bad at ROI over a normal GPU, they simply don't outperform 4xxx series by that much.
That's good to know, although i wonder how many regular people buy customer GPU just to use AI feature. I recall news which state new Intel CPU optimized for AI task, which means those people doesn't need to buy dedicated GPU.
If you're using it for image processing (stable/comfy) 3080 is still good for it, heck even my old 3060 with its advantage of 12gb of RAM would be enough for home personal projects (and a ton of hentai from civitai). For anything larger consumer as training anything else from scratch GPUs are simply no match for the task, you're better of just buying the power needed to compute from the thousands of offers you have pop-ing right and left, if in mining the H100 is barely surpassing the latest 4xxx series, when it comes to AI it would blow a whole 10x rig by a mile.
As for intel, meh, even their dedicated cards (arcs) really underperform as for their design chips (gaudi) those are in the car prices range