The reason that airlines are 'robbing" the public is simple economics. They are trying to stay in business in the face of economic hardship amongst their customer base which has driven revenues down and escalating fuel prices which have driven expenses up. They have cut expenses by slimming down their staff and canceling flights, but some are fixed. It's a tough game to stay in. Any airline that tries to do business as usual as defined 10 years ago will be out of business very soon.
It does no good to whine about it. It is what it is, and we must play the hand that is dealt us.