Well for a union to work, you really have to have everyone on board otherwise it doesn't work. Another thing, the people at the top in boxing, the promoters and managers, don't want these unions to succeed.

I'm not sure a strong union with ever come to fruition in boxing for a few different reasons. Mainly because the people at the top would fight so strongly against it, and a fighter trying to score a title shot and a big pay day isn't going to want to blow his shot at a title because of his union's demands.

I think there are ways to get benefits and fair pay without going to unions.