National Geographic did an hour long report on e-sports in South Korea, and the big names in Starcraft: Brood War, at the time. The game, a real-time strategy game that involves high amounts of multi-tasking, decision making and hand-eye co-ordination. The gamers, who all live and practice together as teams, are paid to play video games for a mandatory 10 hours a day, every day, and usually go well into the night on their own accord. The best players have female fan clubs, thousands of dollars in prize money and shown to have an immense love for the game.
Interestingly enough they decided to compare the brain patterns of an amateur and a pro. The pro-gamer's brain showed to work completely instinctively, like a court stenographer on a keyboard, whereas the amateur's brain relied on visual inputs.
Korean culture has turned these young males into celebrities, often robbing them of many years of school or regular social interaction. When the players grow up, they often have to retire due to the strength of younger players, leaving them to resort to various jobs that based around e-sports. These people have dedicated their lives to online gaming to the point they made a booming industry.