They do illegal trickery all the time bro. That’s what a scam is. The whole point is, the first line of investors get to make money, while everyone else down the line makes less and less.
Usually sales are thwarted because they offer expensive shit products, and they pressure their associates aka MARKS to buy product. It’s claiming you’ll be able to make money hand over fist, but first you need to buy a bunch of shit in order to get started.
At real jobs you don’t have to buy anything to get started because there’s an element of quid pro quo. In an MLM it’s one-sided and designed to bilk money out of the lowest rung.
How do you think my career in MLM ended? After a few weeks I went back to the office, and guess what? It was EMPTY. Not a stick of furniture left. I wonder why that was? In anycase I kept my product, never spoke to them again, and ended up much happier and better off not working for an illegal scam.