自転車トライアルがオワコンになった本当の理由

Population decline, the sport becoming extremely niche, and the barriers to entry are unusually high. The process of getting into the sport is too far away; it's incompatible with the age of social media. Associations and competitions are biased towards top athletes and international focus. The general public is left behind. Prioritizing competitive players leads to an increase in people feeling that "there's no point in getting involved." Community insularity, etc.