I am wondering on why the structures for some sports are completely different to others. Especially, why it is that in most winter sports, like downhill skiing, cross-country skiing or bobsleigh athletes always compete internationally for their respective country. In most other sports like football or cycling you do have individual teams or clubs competing on a national and international level and also additional national teams.
Is this based on historical reasons or why don't we have something like a team or club structure in some sports, mostly Olympic sports probably.