[doikor]

Dota players play/watch Dota. Similar thing also applies to country strike players.

At least this is the experience in my circle of friends. Got a couple friends who have pretty much only played Dota (or CS) for the last 15+ years and have 0 interest in even trying any other game. There is also the crowd (including me) who play video games in general but these are very clearly different groups.

So this is like saying "football fans are insular to football". I mean yeah they are football fans not "sports fans".

[Retric]

Most football fans I know watch other sports, often basketball. If for no other reason than the season is fairly short.

Dora is insular in large part because it’s always available.

[doikor]

I think it also has a lot to do with it being much easier to actually play the sport/game.

When the pros are not playing you can just play yourself. With football/etc playing the game in a proper competitive setup is quite the hassle. In Dota or CS you just get 4 of your friends and press a button and in 2 to 3 minutes you are playing.