i think like trading and one night stands some decisions are easy to see in hindsight
once a circle of trust has been created [and you would have had to have been there to participate in that circle that was created over several months] then to withdraw trust becomes a greater thing.
after all if someone just did a thread on the board 'i'm starting up a scheme that will make us rich this time next year for only investing £100 no one would believe it. [however the nigerian lottery emails still worked as did the bank details ones even without the circle of trust].
this is what every commercial business is trying to create -a circle of trust. Some with good intentions of offering a mutual beneficial arrangement [fair exchange is no robbery] and others who only have that idea as a mask.
there seems a fairly standard pattern of people on the web offering 'education' [the hook] be it through a free course , videos , chatroom , live trading room, a strategy [the line] as a way to get people to later part with their money in signing up for something 'extra special' [the sinker].