Training of ANY type, whether it’s about starting a business or anything else has a low success rate.
Recently, I studied a book about training teachers in school systems new, more effective teaching methods. Only 10% of teachers actually implement for any sustained period of time what they are trained in.
As a generalization, this SAME thing applies to marketing training. About 10% of the people implement in any longer term basis. And obviously, you don’t get results or make income unless you implement.
Having said that, in surveys of my customers, 40% report earning money. But this could be attributable to attracting a more serious audience to begin with.