Ideally, extreme sports just being extreme, will never be over populated, regardless of how much popularity or coverage it gains. It will still remain an extreme sport. There just aren't that many people that crazy enough to do it, like Swoop for instance. It would be awesome if they had better coverage though. Extreme sports will always be better than your casual, boring sports such as football, just because of the simple fact they are extreme.
So when it comes to these sports. I say let the underdog win. That tends to tick more people off. It's all boring anyway, so I have to find some way to enjoy myself.