Do they, though? Between schools offloading teaching as "homework", making kids do after school what should've been done in-class, and the cultural pressure making parents sign up kids to every possible extracurricular they can afford - there's not that much time in a kid's day left.
> a treehouse is rarely the path to riches
pg did not talk about riches in this essay, and especially in this paragraph. He talked about doing interesting work.