> because vibes, basically
This may be more accurate than you realize. Both Democrat and old Republican party rhetoric and policies were pro-globalization/offshoring, with the occasional exception such as CHIPS (and corn subsidies). It's not surprising nobody believed they were changing direction, if for every "we're bringing semiconductors back", they heard ten "your car is German your phone is Chinese your tacos are Mexican, how dare you interfere with glorious Free Trade!"