I just gave some random links I googled... feel free to keep digging, there are more that back me up.

You're wrong about scalpers too. They know the market... of course they know to prey on every opportunity.

Your 'evidence' is really nothing. That's a few thousand gpus... not that many, honestly. They are also not top of the line gpus... which gamers want to buy. older rx470 polaris class gpus are more than enough for large mining farms.

full disclosure: i'm a huge gpu miner, so i definitely have some experience in this area.