With this whole Schaeffer-De La Hoya feud coupled with Haymon's recent power play in boxing, it struck me, why do boxers needs to sign with promoters at all? If an adviser gets the boxer fights with the networks, and the money is coming mostly from the networks, what value does the promoter add?

I have no skin in the game. Arum, Haymon and Schaeffer seem like snakes.