The point is had Britain been joined the Germans would have run over the top of them, just like they did to the BEF at Dunkirk when the Brits were looking at a conditional surrender.
As far as BAE goes, he was talking about what the people of the world want, things like computers, cars, cell phones. The UK makes practically nothing people want.
You silly twat, the US doesn't make any of those besides cars. And I believe I prefer Aston Martin to any American cars.