For me personally it's because there are too many random events for all the different games. There is no one big tournament that many people could focus on and

For me personally it's because there are too many random events for all the different games. There is no one big tournament that many people could focus on and talk about. E.g. even if I was interested in some particular event, it would not feel appropriate to mention it to my friends because they most likely will not care about it... so there is no community feeling.