This is a bit like complaining that toilet paper manufacturers did not dramatically scale up production in the first months of COVID-19. Had they invested in additional factories and production lines, they would be now holding the bag.
The memory market isn't all that different, except it's even more capital-intensive. Roughly half of HN is convinced that the current AI boom is unsustainable even though the technology itself is amazing. So why should memory makers take the bullet here?
Ultimately, as much as this sucks, having an inexpensive gaming rig is not a human right. People with money decided that all that money should go to AI, and we have to suffer through the downstream consequences of that.