The entire ecosystem of automaking is just like tech - clusters of complimentary industries. There's a symbiotic relationship between Mercedes, Ford, BMW, GM, etc and their suppliers -- many of whom in the american case were former subsidiaries of the automaker.
That's why Ford, GM, Porsche, Mercedes, BMW, etc have a hard time closing the deal on EV. The American car companies are more fucked because they've engineered the business around compliance requirements to mostly only make trucks. It's hard to eat your children. Meanwhile, BYD isn't run by a bipolar drug addict, and they are going to back up the truck, slowed down only by protectionism. I drove one when traveling, and it felt like driving a Tesla in 2015.
For companies building cars in Germany, the US and to some extent Japan & Korea, we're living in a do-over of 1976, except China is Japan.