I've always detested such simplistic, ludicrous generalizations. The ignorance just drips from every word. And I'm not scourging you, Browntothebone, my furious hatred is for whoever you first heard it from.
Forget the costs of the flight, what about the costs of the network to fill the containers? Total system revenue for an arbitrary number of packages versus line-haul costs for one arbitrary flight is an utterly useless measure. The word 'profit' was misused from the beginning, 'contribution' would be a better term. Some management ****************************** thinks his employees have double-digit IQs and that likening profit margins to the number of cans in the aircraft is the only way they could ever comprehend the concept of profit margin, which took him 5 drunken years at Wharton to figure out. ******************** this entire goddamn industry.
And yes, I spent the day polishing resumes. Makes me sick, all of it.