Twitch streamer Tyler "Ninja" Blevins says lot of his income is derived from Amazon Prime subscribers, who are allowed to donate to his Twitch channel, and his 5 million subscribers on YouTube.
"I think that I offer a combination of high-tier game play that they really can't get with a lot of other content creators. It's very difficult to be one of the very best at a video game," Blevins said.
https://www.cnbc.com/2018/03/19/tyler-ninja-blevins-explains-how-he-makes-more-than-500000-a-month-playing-video-game-fortnite.html
