I'm not sure exactly what a "niche" sport is, but if you're suggesting it doesn't have potential for widespread appeal I disagree.
I do agree the fan base is limited, I'm not going to argue with the numbers. Obviously more people watch the NBA than watch the NHL. That was my exact point, it seems like a problem with marketing. I think if it got more play its fan base would grow.
Either way I don't really care, I love the sport, I love betting it, I love watching it, everything about it. If others don't watch it that's their loss. I don't see why I would let the ratings affect my opinion. "Oh it gets relatively low ratings, so it must be shit". Is that supposed to be the attitude one takes? Seems weak-minded.
I don't know why you're bringing this up like it bolsters some argument you've made in the past or something...