Video games are now quite a profitable area that brings a good income. I think this is the main reason. According to modest statistics, gamers earn hundreds of thousands of dollars, and companies make millions.
It is not surprising that the guys who make money are interested in something like this. A lot of attention is now focused on the game LOL. They have a large fanbase, a strong marketing campaign.
Recently, I also started playing it, having bought a league account on one convenient service. I advise everyone who wants to play but does not want to waste time on pumping. And it's worth playing—an amazing game.