It's incredibly difficult. I'm a very competitive person, and I've been playing games my entire life. There's more than just being good too. If your goal is to "go pro" then I would say that's substantially more difficult than to work on a brand and a Twitch channel and create content. You will find people who will go homeless just to be 1% better than you at a video game, it's not worth it. Also, college helps on your path to becoming a pro if anything. My school has state of the art tech that I can smash other players with. I've also met people that are on the cusp of being pro through school, so yeah, it's a whole mix of network, skill, and pure determination to truly make it as a professional gamer.