Comment by Incipient
The idea is someone else comes in that's happy to eat their lunch by undercutting them. Unfortunately, we're probably limited to China doing that at this point as a lot of the existing players have literally been fined for price fixing before.
It seems more likely that someone else comes in and either colludes with the people who are screwing us to get a piece of the action or gets bought out by one of the big companies who started all this. Since the rare times companies get caught they only get weak slaps on the wrist where they only pay a fraction of what they made in profits (basically just the US demanding their cut) I don't have much faith things will improve any time soon.
Even China has no reason to reduce prices much for memory sold to the US when they know we have no choice but to buy at the prices already set by the cartel. I expect that if China does start making memory they'll sell it cheap within China and export it at much higher prices. Maybe we'll get a black market for cheap DRAM smuggled out of China though.