I'm not sure either. Particularly how, even in the presence of any policies, they could police the system: Does YouTube send someone around to check on the Ryan's World kid and the work environment?
Even with child labor policies it doesn't seem like platforms would be much better at managing them than content moderation.
A partial solution might be that games by developers without legal age verification can't utilize real money transactions via the Robux currency. That way Roblox isn't rewarded directly for it either.
Your solution to children who want to sell things on Roblox getting exploited by unscrupulous middlemen agencies is to make it impossible to bypass those agencies?
...I guess I always assumed that the ones who were monetized had parental involvement. Does Youtube allow minors to do that themselves?
I don't understand how the stuff Robox does (and maybe Youtube?) doesn't run afoul of child labor laws...