Fear ducking, Business ducking, Reputation ducking

Fear ducking - simply being afraid of getting beat up or knocked out Business ducking- being afraid of losing income Reputation ducking - fear of losing that 0 or being perceived as a lesser fighter by the fans. Out of these 3 which one do you think prevents most good fights from happening? I think it's combination of all 3 but I think business ducking is the biggest problem. I also think it's management not the fighters themselves who do most of the ducking.