Big time boxers are just doing it for the people and money now, the pride is not a big deal anymore to some boxer since results are already made up even the fight didn't start yet. They can easily attract a lot of people that will watch and bet to the fight since they made it on the top and very popular on that particular sports.
I just watch Manny Pacquiao's match since he had a passion for boxing, he started from the bottom and now he's also same with Floyd that's earning a lot by fighting. IMO, some of the sports now include publicity actions to gain more money, some times mafia is involved here.