That's true. But it's a business that a technician can run successfully. It doesn't need an entrepreneur type person like so many "people" businesses.
I believe you can see the different business personality types in trading courses for sale/
Courses designed by entrepreneurs are.... well, all the things experienced traders dislike about courses. BS, poor content, ridiculous claims, EXPENSIVE etc etc. The course designer probably no longer trades and was a loser when he did.
Courses designed by technicians are more low key and factual without the ludicrously BS marketing. Much better courses by a million miles, but lacking in the marketing and promotion department. They appeal to logic rather than fear and greed. Consequently they don't sell as well, but at least they make a quid trading... because they still actually trade.
The classic "technician has an entrepreneurial seizure" scenario. I'm a good trader, so I'll sell thousands of really good courses.
Just my observations.