alt Hacker NewsI think a lot of what you say is true, but we're facing shortages for DDR3/DDR4 RAM and this isn't about increasing density or speed, it's about the pricing of what is a high yield functional commodity in todays manufacturing.
So the questions about 3D and 4D ram, they just aren't applicable.
Somebody should be making Samsung/Hynix ram chips and assembling them onto carriers 24/7 to sell to ordinary people. Instead, the entire production capacity is selling to Hyperscalers and going to AI.
(I could of course be wrong about even this)
Commodities are being produced at scale and being sold to those with the resources to buy them. That's free market capitalism (derogatory).
Demand is up, prices are up, production is also up. The only "problem" is that you and I don't have disgusting amounts of money to buy in.