Less than two decades ago, e-sports consisted of a few dozen elite gamers gathering in warehouses to compete for modest-at-best prizes. There were no televised events. No live-streaming or uploading the tournaments to YouTube. And of the fanfare, there was little. But today, e-sports has climbed out of basements and warehouses and onto major cable networks such as ESPN and TBS and is on the verge of becoming a $1 billion industry.