True, and it is the cost of doing business. It is up to management to decide which planes it wants where. If it brings in 4 times the profit than domestic airlines, then great. A lot of it is figuring out where the planes should go to make money. Right now Asia is hot, but Europe isn't doing great lately due to the economic mess. Luckily, some of the planes that go there can be moved to Asia or South America. That is what is good about having the right sized fleet. During the Summer the A330s do a lot of Europe out of our biggest hub, ATL. After the loads drop off a bit in September, those A330s start to switch to other regions, and 767ERs replace them. The 744s and 777s usually do trunk routes that have a lot of cargo and have pretty good loads year round, like LAX to SYD. If you had 100 744s, and economies tanked all around the World, that might be really bad.
Sorry about the thread creep. Hopefully your SWA upgrades continue at a fast pace...
Bye Bye---General Lee