Memory fab build out times are years not months. The existing ones already run 24/7. If these companies could pull more supply out of thin air they would, but they cannot.
There are several Chinese fabs that they could contract out production to. In fact that's exactly what Apple tried to do, before the U.S. government went full protectionist and added the two memory manufacturers to the banned imports list. There's also the Texas Instruments fab that's underutilized right now. The extra capacity exists, it's just Micro and SK Hynix are throwing their money around to stifle anything that could jeopardize their spike in profits that are historic not only for their industry, but for manufacturing as a whole.
I didn't say the build out time was months.
I said:
> the test isn't "how much is price going up" it's "how aggressively are the RAM producers expanding supply production"
Large barriers to entry are anathema to competitive markets, so the conclusion here is still that firms are benefitting from the lack of a competitive market.
Memory fabs take years to build, they cost a lot and there is no guarantee that the demand will stay as high years in the future. It's all very complex.
And yet, memory manufacturers have been caught (in legal cases and fined) many times to collide and keep prices high artificially in the past.
I'm curious what the limiting factor is for "years not months" when building these fabs. DRAM is a commodity, there are only threeish major manufacturers, all have huge amounts of capital, multiple nations bend over backwards for new semiconductor production projects, and there seems to be unlimited money going into purchasing these things.
Even when it comes to manufacturing the tooling/testing infrastructure, it's just a question of money aiui.
Would they?
Cartels aren't known for massively increasing production to satisfy all demand. Far from it I'd say, they're more likely to expand supply to such a level that they can still reap massive profits. Very few countries/companies have the knowhow and willingness to be able to build more.
OPEC is a perfect example of this behaviour. They set hearly production goals to keep prices high. Or the Quebec Maple Syrup Producers organization that limits the amount of syrup a farmer can produce and sell in a year to keep prices high.