Is this the only industry where the customer is always WRONG?
Nope, try fast food restaurants. Customer is always wrong attitude, god awfull food, rude employees, payed nothing and plastic seats.
Personally I'm thankfull for all Low Cost Carriers, making travelling so much cheaper and available. If you don't like their service, don't fly them. But I just love the opportunity to Fly RDM - DUB for next to nothing, just to pop in by same mates overthere.