Nvidia fulfilled orders through almost the end of last year for RTX 40. There's a lag between shutting down production and when you actually see GPUs enter the channel.They obviously stopped feeding any new RTX 40 series into the market several months ago.
The part a lot of gamers don't take into consideration is that the Blackwell screw up really messed up plans since 4nm is still at capacity, same with VRAM for RTX 50. Nvidia's fault, but you can't just go to TSMC and buy fab capacity on short notice, even if you're Apple.
You are correct that the short supply is mostly unrelated to those factors, with the exception of tariffs. Everybody stockpiled a massive amount of components in Q4, and GPUs are very low down on the list of things of stockpile. They're almost last.Has nothing to do with pandemics or inflation or tariffs or any of that shit. It's pure inventory control.
It sucks, but gamers are more price insensitive than SMB or commercial, and that's where PC companies focused their stockpiling.