It is greed that make people to fall into the net of all these Ponzi scheme and networking platforms that are everywhere now, some are even inform of trading that they give signal to copy and trade. People don't really reason very well or maybe they know but try to risk it, how do you think someone will be giving you signal just like that. One day they will pull the rug away from your leg. But because people want to make fast money, they will keep patronizing such platforms.

There is how to know Ponzi scheme and I try to list some of the characteristics on this thread.

https://bitcointalk.org/index.php?topic=5538079.msg65274346#msg65274346