I think a more interesting story would be about the people that grind for years and years and never make it. You're left without a useful skill and no money, and probably a deficit on your mental health because you didn't go out and talk to people in real life for years. I think its not at all worth getting into as a career because making it big is like starting out as an actor, you have to know people. If you hit it…
I have a feeling the same warning could be given to actors going to LA trying to make it. A percentage become dish washers after washing out in a couple years but tons who don't find a reliable pay cheque via work in the thousands of related jobs that help run the movie business. The personable ones could use their media skills in the wider business world (marketing/pr/events/etc).
I guess you could say they are all in their parents house's bedrooms not touching grass 24/7 which is different than a failing actor, but being an internet personality is much more involved than just being a pro-gamer who falls off by 25.