Is the latency in flash devices really from the charge trap physics itself? I thought it was more in all the overhead to make sure the bit(s) are actually what it seems like. Also, if there were a market for low latency storage surely Optane wouldn't have died and we'd be living a better, more random read/write performant world.
Optane was too expensive for not enough of an improvement. It either needs to be as cheap as flash or it needs to be so much faster that people are willing to pay a premium (say, as much faster than an SSD as an SSD was faster than an HDD).