Brazilian Jiu Jitsu is also very niche, very little money in competing, yet there are hundreds of professionals who build their schools (with paying students) b

Brazilian Jiu Jitsu is also very niche, very little money in competing, yet there are hundreds of professionals who build their schools (with paying students) based on their competition record. There is no way to compete at the top (and even sub top) without juicing, because the top guys are extremely technical and very strong (and they can train 6 days a week, 2 times a day, plus s&c, which no normal human can sustain for months or years).