No, you're right. China, and even India and Russia, also do not have the same talent problem of the West, in that there is an undersupply of engineers, especially in the geological, processing and chemical sectors. In the US, the average age of the chemical process engineer was touching 50 a few years back. The average age of a process safety engineer is well past 50. While Russia and India lose their technical talent to brain drain, the Chinese govt has done quite a lot in trying to reverse that.

The real barriers are talent and the regulation vs profit motive balance. What I mentioned in my previous comment was effectively an effect of the intersection of the two - you can't find novel ways of processing harmful substances without having the technical talent to find these out in the first place, nor without giving them a free reign after deprioritizing profit.

Let's take arsenic for instance, a substance that's a harmful byproduct arising out of most mining operations. We already have the technology in the West to lock away arsenic into glass, but a.) apart from the big ones, most companies are unaware of them, and b.) even if they were aware of it, the tech is a significant line item that shies investors and companies away from investing into it.

> What is your estimate on how long it would take the West to catch to at least supply some of the rare earth components and what the real barriers might be?

Never. Yes, there are a few companies still engaged in trying to secure REE supply (Glencore being the most notable), but due to Western regulatory and policy limbo, the answer is never. For this to change, you need regulators open to experimentations and a concerted effort by the government in trying to reestablish REE independence, both in extraction and in processing, but I have yet to see either happening. It's telling when frankly the US is the country in the West most likely to catch up still, but the gap is deeper than the Darien Gap .