A famous quote says, "As long as greedy people exist, scammers will never go hungry." I think the main reason behind it is that people don't have financial knowledge. If they knew finance, they would first research how the plan generates money and then invest in it, but the majority of people don't have this knowledge and get trapped.
Scammers are playing with the emotions of their victims. And when you talk to a an actual victim, they will said that they indeed have a idea that it could be scammed, but somewhat they are still fascinated of a possible huge returns.
Greed is the number one thing that this scammers are exposing to a person once he heard that there is a big return their eyes lights up, although in their mind its a scam they will still try to make an excuse like if im early i can exit, but when you are already inside, because of greed you already forget about your plans, most of the time, they have the chance to get out early, but the thing is they will try another one and try to cheat the system which already knew that they will do that, also you will try to recruit others because of the referrals.
I completely agree with you, and such people do exist.
My friend once tried to outsmart a Ponzi scheme that way, meaning he tried to follow every program he found, and exit early (in order to avoid getting trapped). Initially, he was successful with these methods and made quite a bit of money, but as we know, he ultimately lost. Why ? Because, he tried to multiply his profits greedily ; that is, by risking all his money.
Some valuable lessons, from the story :
IMO, his mistake was being overconfident in what he was doing, so he didn't realize that there is no such thing as "sure" in a Ponzi scheme. A fraudulent Ponzi scheme could very well be designed to trap all its users, so that no one would ultimately profit. Furthermore, no one knows for sure whether these programs are connected to each other. So, I think they could have all the data on their users, and they could use it to trap users who want to get lucky (exit early), or they have already studied user habits.
Therefore, I urge anyone not to try anything risky, especially if the risks are too high, like most Ponzi schemes. There are so many such programs out there, whether they use crypto or not (I am sure there are still many of them today), and you should avoid them; rather than it being in vain in the end. Cmiiw.