An important feature of these scams is to frame success and failure as being entirely in your hands: it’s not the system’s fault that you didn’t achieve success, it’s yours and yours alone, you didn’t want it bad enough. Someone who falls in that hole is bound to do it again, this time for a different grift which looks easier. They’ll do as much as it takes until they strike gold, go bankrupt, or finally understand it’s all a scam. That last one can take a long time to come.
In sum, money making courses don’t need an infinite supply of new chumps when they can keep reeling in the same ones. Offer some discounts and rewards for bringing in new members, and you’ve gone full MLM².
¹ https://en.wikipedia.org/wiki/There%27s_a_sucker_born_every_...
