Just a matter of time before these guys are supplying ML card manufacturers with slower memory that works well enough for ML use cases at a fraction of the current prices.
Import and trade restrictions exist in some places but if the rest of the world buys the cheaper Chinese stuff that works about the same then the rug will come out from under the current guys and they will literally never recover.
Guessing the short term profits are all worth it to them, like the typical VC.