Telling people stuff for free doesn't mean they can utilize the information for free. For instance, suppose someone said that many if not most people could be

Telling people stuff for free doesn't mean they can utilize the information for free. For instance, suppose someone said that many if not most people could be very successful investing if they just skimmed the description of each public company's business in the 10-K annual report, and chose a small number of the best ones only after reviewing all of the thousands out there. That's way too much work for most people, but it's hardly impossible. It's not even a full time job. But given it's not attractive to follow that procedure, telling people they should do it has no noticeable effect on its value, even if it works.