Well they are trying. Purism has a "Made in America" phone: the Liberty Phone.
https://puri.sm/products/liberty-phone/
Why do you think cars are leaving the US? Tesla is a fully American manufacturer with some of the most US sourced components, GM/Ford aren't moving their cash cows out of the country anytime soon. and the Japanese and Germans are expanding their presence in the US. You cited a long declining brand that has had an agism problem. Thats your best evidence? I guess you can make the argument that there are too many brands in the car industry but the car manufacturing sector in the US is still quite strong.