Globally the sport is bigger then ever, it's back in the limelight in Mexico, it's very healthy in Germany and Japan for the smaller weight guys. Polland and the Philliphines have become decent players because of the success of Pacquiao and Adamek. Canada has a decent scene in providence of Quebec and Puerto Rico P4P has the best fan base on the planet. Cotto can sell up to 100k ppv buys in a country that only has 1,261,325 households, that's the equivalent boxing selling 8.3 million PPVs for a fight in the US.
Overall I think boxing is doing good, the worst thing going on at the moment is Arum acting like a baby and dividing the sport like it was in the 90's early 00's with HBO and SHO fighters not fighting each other.
Another big reason is the sport is too hard to follow, you really have to be a maniac to try to keep up with all the divisions and titles. Sport reporters unless they really love the sport they just won't pay attention, the media is really what can blow something up or a grass roots level type thing that will knock doors down. Boxing still does the biggest business in the US but a lot of that has to do with the US being so big and even a niche market can do well for itself.
Im 50-50 on it cuz rios is big and can crack and gamboa is moving up idk how his power will be.i like both fighters.but if my money was on it id say rios late tko but id be rooting for gamboa by decision