The global esports industry is on fire and, now, some investors are getting bullish on the industry.

"No question this is changing the landscape for media companies and how people are participating in sports," Tim Seymour, co-founder and managing partner at Triogem Asset Management, a hedge fund, said on "Fast Money" Monday.

Last weekend, the "Overwatch" League's Grand Finals sold out at New York's Barclays Center. Seymour pointed to the participation of large-scale media companies as proof of a growing industry: The Walt Disney Company broadcast the "Overwatch" games on ESPN.

"The fan base is rabid," said Seymour, who is also a CNBC contributor. "The excitement is there. And it's all demographics. It's not just guys. It's not just girls. It's not just young folks. It's old folks."

In fact, the video game industry is booming with more products and tournaments popping up around the world. According to a 2018 esports report by Newzoo, a market research firm, about 2.3 billion gamers worldwide will spend about $137.9 billion on games this year.

That figure represents a 13.3 percent jump from a year ago — or an increase of $16.2 billion. The market research firm tracks usage and trends in esports, video games and mobile.

"Esports, what makes it so special is that it is a global thing. You can compete anywhere," Alex Mendez, an esports commentator and league host for "Overwatch," told CNBC, pointing out that there are games and leagues around the globe.

Mendez said he started playing video games after giving up football.

"And then I just decided: I'm going to transition this into a career," he told CNBC. "But that's when everything was so small. Now we're selling out Barclays Center. That is just mind-blowing."