I think what most people miss in replies to your comment is "building trust at scale". Folks will launch courses that net $1m a year, sure. But what you miss i

I think what most people miss in replies to your comment is "building trust at scale". Folks will launch courses that net $1m a year, sure. But what you miss is the years beforehand building goodwill with their community by helping out, writing articles, attending conferences and giving talks, etc. I do this myself with React at https://maxrozen.com https://maxrozen.com, and most folks that end up buying my book found my site dozens of times first.