In general, no.

It takes billions to tens of billions to setup a fab. It also takes years to get it working. Then when you add in the IP for memory, it pretty much ain't happening.

All the RAM monopoly has to do is wait 3 days before you're producing and drop the price and you're ruined. Meanwhile they've built up a battle chest of hundreds of billions in profits.

China might be the only competition we see come out of this, but only because they are playing the long game and have trillions of US dollars to play the game with.

Chinese DRAM production is already getting ready to ramp up.

https://www.tomshardware.com/pc-components/ram/hp-reportedly...

The problem is every twenty years or so DRAM makers get burned by building for demand that mostly disappears overnight. They've been through it enough times that they're going to be really reluctant to build new fabs. They'll certainly put some effort into getting the absolute most out of their existing installations, but I would be surprised if you see a lot of new fabs until they decide the demand is durable.

The only thing that can actually introduce competition in RAM is some form of government backing around national security concerns. China has been doing this for some time though so there will probably be major Chinese supply coming in the medium term.

Real life is not SimCity, you can't just plonk more RAM factories like that. It takes an ungodly amount of capital investment, many years before you see a cent in return, plus there's only a couple firms worldwide that can do it in the first place.