They don't want to learn and experience what they can get in the trade by paying for a certain group, it's greedy, of course and they don't want big losses so that beginners pay a signal group that can be said to be premium even though it doesn't necessarily make him rich fast even though join.
Making a profit just paying people is the same as fooling yourself, I think it's more useful what we use, profit or loss, it's normal, but that experience can be used as motivation on how to analyze the correct coin.
Being greedy, yes but more to that not losing even a single penny while risking everything thought. Most newbie traders will have the mindset of not losing, but the truth is that losing is a part of learning.
Now sinister people know that there will be traders looking for "premium picks" and similar worded phrases that just mean the same thing. So they run these scams named as signal groups and rip off people by asking them a membership fee to join. That is their earning and while some bamboozled newbie might think they paid for the knight's holy grail, they essentially got looted of that money.
But these will keep on running because there will always be a fresh influx of foolish newbies who keep doing this.