There's plenty of cargo. At NJ
, we had a contract to move automotive parts to support Ford's Just-In-Time inventory system. We moved the parts if our flight was at the right time, which was about two to three times a month at one point.
In any event, Cargo is a huge part of some airlines' operations. I've seen pictures of dedicated NW
747s flying only cargo, and you can often find cargo containers flying along with baggage on the major carriers. Like mail, it helps to subsidize passenger routes, giving the airline additional income and making them more competitive.
Those who fail to learn history are doomed to repeat it in summer school.