Why airlines can't stop cramming more and more seats on their planes

[…]with labor costs rising and gas prices and airport fees steadily inching upward, the pressure is on to control expenses and keep revenue growing apace. Packing even a few more seats onto an aircraft is an efficient way to spread costs over more passengers and ideally earn a few more dollars per flight. Continue reading … https://www.dallasnews.com/business/airlines/2017/11/17/airlines-stop-cramming-seats-planes