The fighters want to fight because that is how they earn their money so it is not in their interest not to actively fight. The only legitimate reason why they would not is to maintain their number 1 spot and not risk the slot.

Ward has had contractual issue but a lot of fighters can not fight because of legal and promotional issues. Perhaps the Boxing Union be set up to protect and represent the boxer to be able to get back into the ring asap as their career is time limited and every year they are out is time lost earning.