Its possible. As e-sports is an internet thing, and not a TV thing, it has an international aspect that a lot of traditional sports are missing. At the same time, its viewership is still pretty narrow (vast majority are males from 15 to 45).
As someone who watched justin/twitch grow up, SC2 made watching people stream games a 'thing', which in turn transformed twitch into the vehicle for a new industry, basically pro-gamers streaming 24-7. Even after SC2 died LoL/DOTA2 had already came in and the popularity keeps getting higher and higher. LoL and DOTA are the big pastimes for young males in Asia, depending on the country.
Thing is this massive increase in popularity was driven by SC2 first, and now its being driven by MOBAs, that have a lot of advantages, like being free to play, addictive, accessible (don't need an expensive comp to play) and team-based. Both games are very well-financed in every way by Valve and Riot respectively. Right now, they are the only two e-sports that actually matter, and it will probably be that way for the foreseeable future, such is their monopoly. It will be interesting to see how long this continues - lot of people thought SC2 was going to keep improving popularity wise for years, but it dropped off super quickly and a lo of people lost a lot of money investing into what seemed like a 'sure thing' at the time. If something similar happens to LoL/DOTA down the line then who knows what will happen to twitch, and by extension, pro-gaming.