If need be plenty more could found in Europe.
If you process many things in the West, you can't leave toxic chemicals in pools any more, to leak into ground water and cause cancer and other problems for people. So processing costs are going to be way more expensive than in a place where it's still OK to process+pollute and therefore kill and maim your citizens to make money.
The West cannot compete with that.
Do you have actual evidence that lithium refining is a massively dirty industrial process that would cost multiple times more the West? Or are you speculating?
Tesla is building a lithium refining plant in Texas right now, they didn't seem to have massive environmental problems and delays so far.
In reality, the lead china has in these fields is more because of state investment policy and their drive to have an export car market. They saw the EV revolution as being able to make that happen, and it did.
Europe may've gotten the short end of the stick, but there's plenty