It's not so bad. Nvidia could come and say, "hey, I'm going to lock down your GPU so that you can only use it to render polygons in my whitelisted list of video-games, and then you pay us $$$$$$ to buy our 'datacenter' thingy for anything else." But if they do it, people will go and buy the competitor's product.

And yes, probably their 4090 are being bought by some rich kids with their parents' money, but I reckon most of it are sales to professionals, people who would justify their purchase decision with more than playing First-person-shooters. I for example play videogames with my gf, and we have equivalent GPUs. Hers is AMD and costs less than mine, even if it does the same, but I went for Nvidia so that PhysX were available and I could use Pytorch and Numba+GPU and even C++ CUDA. The moment Nvidia locks that down, I'll have to switch to AMD.