I wonder how long it will take for China to flood the market with state-of-the-art modules. It's a pretty decent opportunity for them. They probably can hasten the build of new fabs more than many other nations.
But my guess is that this shortage is short-lived (mostly because of the threat above). There's no OPEC for tech.
They just debuted in house DDR5 2 days ago: https://wccftech.com/cxmt-debuts-domestically-produced-ddr5-...