I can see where you're coming from, but I've got some follow-up questions:
What percentage of kids do you think make Roblox mods?
What percentage of those modders do it for money?
Does Roblox provide childcare, lunch, physical education, face-to-face interaction, enforced time structures and social hierarchies, and/or extracurricular activities?
I honestly do not believe they're remotely comparable. They serve such drastically different purposes it feels like comparing baseball to banking. We might be able to call one better, but I believe which one will vary wildly between kids.