[knolax]

>There's a built in longevity to the game that there isn't in e-gaming.

Tetris came out 35 years ago and they're still holding world tournaments for it. Not to say that modern modern e-sports are the same as Tetris, but there doesn't seem to me any reason why LoL would be less likely to be around in 20 years than boxing.

[BurningCycles]

Starcraft Broodwars is 20 years old and there are still professional tournaments being played in front of large live audiences (a large tournament recently ended and a new one is starting in about two weeks), and players are making a living out of streaming and playing these tournaments.