> Maybe a good time to start a company selling to the government.
Why do you think this sudden rise in industrial investment? The US didn't turn attractive overnight. This is the "economy" selling to the government their $280Bn CHIPS package.
> It's too early to know, but if it turns out the solution to decades of economic misery for middle class blue collar workers was
A 50% tariff does not affect attractiveness. You did not address the core issues, as the tariff will hide it. What will happen is free market economy at play: As the issues are hidden behind tariffs/protectionism, the US will keep falling behind China until you are significantly behind that you can't catch up. Then you become a real third-world country.