I think the problem with schemes like this forex one is that you can legitimately make money in a fairly low risk way if you are selling the training/entry fee.

I think the problem with schemes like this forex one is that you can legitimately make money in a fairly low risk way if you are selling the training/entry fee. You just pay $50, or $200 or whatever to be a part of the org, and then convince a bunch of people that you are getting rich off of forex and that they need to buy in as well. The people who lose are the ones who actually try and trade forex, rather than selling courses since they are paying an upfront fee to participate in a 0 sum game. Of course at some point you run out of customers and it collapses, but there are a lot of people in the world who are interested in getting rich off trading.