Of the forces that could drive the future of the video game industry, including new consoles and virtual reality, one especially interesting opportunity lies in e-sports. Some of the industry's biggest players are racing to establish themselves in this space, but exactly how viable are video games as a spectator sport?E-sports -- also called competitive gaming or pro gaming -- closely resemble more traditional sports in that participants compete to earn salaries and cash prizes but in multiplayer video games such as League of Legends and World of Warcraft.