The problem is it's manufacturing capacity that is being bought. They're going to use that capacity to build HBM modules and data centre GPUs that cannot run outside of specialized servers. There will be a lot of high end gear gathering dust, but nothing you or I can use.
Maybe if you're a large business/enterprise you could get some hardware on the cheap during the crash, but it's not ot like those things are full of DDR5 DIMMs and RTX GPUs.

It's not even ECC RAM that's the issue, it's that they're not making DDR ram at all, it's HBM RAM which is totally different. That and the GPUs are custom solutions that slot into specialty liquid cooled server chassis with proprietary connecters and everything. It's simply not for anything except for it's current purpose in a server.
I know how you feel, it's too bad this is impacting Valve. I really want their new controller which won't be hit by this, but I expect they're still going to wait and release it with the other products.