>Imagine what the United States economy will be like if Stellantis, Ford, or GM or all of them go bankrupt. 3-4 million in lost jobs alone.

They wouldn't go bankrupt. They will be saved and protected by government bailouts and tariffs, and the situation will become similar to say Russia car industry. Though, naturally, the situation with Russian cars has become so bad that even they are forced to massively open market to Chinese cars (and even "Russian cars" become more and more just simple rebadge of Chinese cars).

In short - if you don't compete by increasing productivity, efficiency, quality, you will be overtaken by the ones who do. The government actions may prolong your complacency time, yet ultimately such prolongation is just the time you actually lose falling more and more behind.

The whole world by now, 20 years after Tesla roadster, should have been driving American EVs, yet instead we have classic paradigm shift there US is Sun Microsystems and EVs/solar/wind/batteries is Linux/x86.