Here's some photographs of Boeing's "wasteful logistics" (ie the same way that Airbus does things) in action, shipping 737 fuselages across the USA.
http://nwownrailfan.com/archives/features/0204camp.html
You wouldn't want to produce the whole of the A300/320/330/340/380 in Toulouse (or anywhere else) alone anyway. The local economy couldn't supply the huge number of specialist jobs and skills required.