I'm not defending get-rich-quick scheme peddles, but charging for lessons in how to make money doesn't prove the lessons are bad. Nobody says this kind of thing

I'm not defending get-rich-quick scheme peddles, but charging for lessons in how to make money doesn't prove the lessons are bad. Nobody says this kind of thing about how new software textbook of the week must be wrong be wrong because sharing it hurts the author's employability and they're charging for the book so it must not be a desire to share. There are plenty of ways to make money that aren't zero sum competitive markets. Some people want to share what they know and aren't hurt by it. But writing that stuff up costs time and energy, so charging for it makes sense.