DRAM hit a scaling wall about a decade ago. Capacity per dollar has not been improving significantly, certainly not at the exponential rate it had been for the

DRAM hit a scaling wall about a decade ago. Capacity per dollar has not been improving significantly, certainly not at the exponential rate it had been for the prior 50 years or so. https://thememoryguy.com/dram-prices-hit-historic-low/ https://thememoryguy.com/dram-prices-hit-historic-low/ As to why, search for words like "dram scaling challenge". I'm no expert but I believe capacitor (lack of) scaling is the biggest problem. While transistors and interconnections continued shrinking, capacitors suitable for use in DRAM circuits ran out of steam around 2xnm.