From research to large scale trials i would expect building the processing industry to take at the very least a few years. And once things are in place, China can just reopen the floodgates and give these new refiners a hard time, unless they are heavily protected by their government then.

So it requires a dedicated long term strategy to counteract, which will take some years. Also in the meantime all dependent industries are suffering big-time while China can still export the finished products and further strengthen their industries.

In terms of economical power this move is much stronger than Trumps tariffs and there is no rewards to be expected for countries who stick it out for the US. The US has already made it clear that it will just make you suffer more, the more you give in to them.