Boxing will only get it's **** sorted and unify if the sport declines massively but even then the greedy short sighted promoters will likely try and milk it to the last drop. Doesn't really bother me any more because I don't pay much attention to boxing these days, the sport is just so fragmented and farcical that rather than try to rationalize and make sense of boxing I'll just follow UFC where 9 times out of 10 the best fight the best, each weight class has 1 world champion and fighters move up the rankings by beating guys above them unlike boxing where fighters move up the farcical rankings by beating opponents ranked below them. And for those saying that UFC is an organisation and not a sport well technically that's true but in reality the UFC is MMA to the casual fan, it has all the best fighters and all the prestige. Take a look at any independent MMA world rankings and you'll see that the top 10 fighters in each weight class are all under contract to the UFC.
The beauty of the UFC is that the best fight the best, period. Look how long it took for Floyd to fight Manny. In MMA they would have had a trilogy by the time the first fight happened. Not just that, but both men would have been prime when they met each other. Danny Garcia, for example, had he been a champ in the UFC he'd have fought THE very best. Look at the opposition he is getting away with fighting in Boxing...
in America there is the Ali Act, which is supposed to protect boxers (even though I was at a completely mismatched card in Nashville this past weekend, where everyone in the red corner got completely and irresponsibly slaughtered). a lawyer once told me that a boxer has the right to negotiate with the promoter based on expected sales, hence big name boxers get much more money than UFC/MMA counterparts. it might be coming soon though, which will change the way UFC is run. Ali Act http://en.wikipedia.org/wiki/Muhammad_Ali_Boxing_Reform_Act more about how Ali Act would change MMA and Kickboxing http://mmajunkie.com/2016/06/with-ali-act-a-long-battle-for-mmas-future-is-just-beginning and as far as one unified governing body for boxing, that's what AIBA's president, Dr Ching-Kuo Wu, is attempting to do with a mission "to govern the sport of boxing worldwide in all its forms". allowing (AIBA recognized) professional boxers into the last Olympics was the latest investment into a much bigger plan.