So, here's what Phil Fish has to say on YTers and making money off of playing games.
"YouTubers should have to pay out a huge portion of their revenue to the developers from which they steal all their content. Ad revenue should be shared with developers. This should be built into YouTube. Anything else is basically piracy."
- "If you generate money from putting my content on your channel, you owe me money. Simple as that."
- "If you buy a movie, are you then allowed to stream the entirety of it publicly for people to watch for free? No, because that's illegal."
- "Systems are in place to prevent that. But buy Fez, put ALL of it on YouTube, turn on ads, make money from it and that's TOTALLY FINE."
- "And the developer should in NO WAY be compensated for their work being freely distributed to the world. Right. Makes sense."