B
Black Swan
You seem to know a different set of people than I do or you don't have insight into the motives of the people you know.
I know lots of people who not only sell courses, but also offer quite a bit of free help. I believe in the Learn-Earn-Return approach to life. The proportion of your time you devote to each of these changes as we get older. Some never see the benefit to themselves or to others of the Return part.
Many people charge for their courses so that they can Return both time and money. I know of one very successful Educator-Trainer-Coach who uses a lot of the money he earns to sponsor micro-loans in third world countries. Micro-loans is one of the most successful programs that not only gets people out of poverty without charity, but has proven to be a great program for the empowerment of women.
Hmmm...I've a strong feeling that you are in fact not new to this forum and this is your second, or perhaps third identity on T2W....am I way off?