

Buying from other economies does two things. One, you have access to their expertise/efficiency.
Not everyone will have invested in the same industry.
Will miss out on cheap labour. Cheap resources.
Don’t be dumb though, selling us USD for our products isn’t just “printing paper”. We use those USD (mostly we sell the debt to china) to buy USA companies. It’s capitalism after all.
I’m EU citizen, I go into Germany if I so please. I’ll do it and I’ll do it again.