This is classic Chinese manufacturing takeover.
Want to sell into our market? Not only do you have to put production here, but the entire supply chain - and train your workers in whatever they need to work for your new competitors who are going to be taking advantage of the supply chain you've established.
Musk almost certainly knew this was coming - might have been worth it to have workers he could treat the same way his dad treated emerald mine workers in Apartheid South Africa.
For anyone interested in those Chinese models, try to get one early on, the Chinese are also famous for gradually reducing the quality of what they're manufacturing. See Paul Midler's "Poorly Made in China".