Is it possible that with a weak dollar, American exports and unprofitable companies and businesses will be more attractive to foreign investment and purchase?
IMHO you are correct. And everyone who controls some aspect of US economic governance knows it too - even created the situation. IMHO the point is to get every possible US economic advantage out of the lower dollar for as long as possible. (Isn't China doing this too, but by keeping it's currency undervalued?)
bzzzzztt..... (Game show wrong answer buzzer)
We have been sold on the “global economy”
We can’t even make a widget without buying some specialty widget screws made in Sri Lanka or whatever.
It would take a decade at least to unravel these ties to make American manufacturing more competitive.