League of Legends Championship Series isn't profitable — and Riot doesn't care
Riot see the League Championship Series as a smart marketing expense.
Plantronics blesses e-sports, becomes official sponsor of League of Legends tournament
Plantronics will become the official headset sponsor of League of Legends Championship Series in a deal with Riot Games.
League of Legends Season 3: Taking the ‘e’ out of e-sports
Coming out of a World Tournament that elevated e-sports' popularity into the big leagues, Riot Games is planning to take League of Legends mainstream by erasing the distinctions between sports and e-sports.
Riot Games’s path to blockbuster expansion: League of Legends eSport tournaments
Riot Games hopes to turn its hit game League of Legends into a household name by dramatically expanding a professional-gaming league that rewards players with big prizes and recognition.