Profitable manufacturing is not just a matter of cheap labor. The Japanese automakers have no difficulty making money at their American factories, and in fact, they are expanding their US operations right now. The primary differences are first, that they have no unions, and second, they are bigger on engineering.
This might be off topic, but I don't think you can say that Japanese auto makers are making more of a profit because they are nonunion. I think Japan basically has better quality engineering than American cars. Detroit has tried to emulate the Japanese, but haven't quite been able to do that.
I think you can agree that The Boeing Company is doing extremely well and has both blue collar and engineering unions. The Company works well with the engineering union. Airbust doesn't have unions per se, but they are socialist, which is a hell of lot worse, imo.