I suppose you've heard about the Southwest Airlines v. film director Kevin Smith (Clerks, Chasing Amy, and upcoming Copout) brouhaha by now. It seems to me that it's a perfect example of how capitalist corporations fail to serve their customers but just indulge their greed for profit. After all they have to pay their executives. Clearly greed isn't exclusive to Wall Street. In short, in case you missed it, Smith was thrown off a Southwest Airlines flight (although he paid for two seats) because they couldn't accommodate him on a soldout flight. If you want to check other airlines click here
It seems to me that if airlines were concerned about serving their customers instead of squeezing as much out of them as possible they would have accommodations for heavy-set people. But that would mean they might have to give up a few seats (and a few fares). It's hardly surprising that people are flying less. It's also true that Americans are getting fatter (not a good thing) but the airlines are not the appropriate diet monitors, since all they care about is making as much profit as possible. so the hell with the customers. Also, I believe, if the planes were appropriately designed (for the population) the concerns about safety, voiced by hired experts, could easily be accommodated. The capitalist hunger for profits is not a customer or worker friendly world.