The problem is the economic incentive. In all the prior cases you mentioned, their commercial interests aligned with our own - at least in part. This time however, I'm worried that they aren't concerned about burning down the world economy, at least in part, since their bottom line won't suffer for it.
For example, Micron didn't think about any alternatives for the consumer retail market. They just dumped it entirely.
The economics behind this isn't rocket science. Micron left the retail market because it is more profitable for them to supply exclusively to the hyperscalers. Not because they can't supply the retail market or because it wasn't profitable. What makes you think that any other manufacturer is going to take a different decision? Why would they choose a market that offers less than the biggest bidder?
Someone will fill the void. Another company will sell ram to the retail market if the big players won't. More manufacturing abilities will open up. It's not like ram is becoming extinct. Someone will tool up and produce them for the retail market just as other brands have done in other sectors when the market shows a void.
Last I checked I could still buy Crucial RAM chips. In time, maybe it's Kingston. Or maybe Gigastone.
For example, Micron didn't think about any alternatives for the consumer retail market. They just dumped it entirely.