The fans are the sole reason for the NFL's existence. Without fans, the NFL would stand for "No Freakin' League." Owners would probably be in some other line of business and players would be playing weekend pickup games at the local field. When you take someone's money, you have both an ethical and a contractual obligation to give them your best effort to provide the service you offer. Anything less is theft. Believe me, I deal with it in my line of work all the time. Granted, players won't often get arrested for theft for failing to put forth their best efforts in a game, just because it's hard to prove without hard evidence that they took actions to intentionally throw a game. But the concept is still the same. If I buy a ticket to the game, I have every right to expect that the players are putting forth their best efforts. If I find out later that a player wasn't doing so, then I have every right to complain because he already got my money. Carson Palmer owes his career to people that buy tickets, just as every other professional athlete does.