No matter how they deny it, MLM as distinguished from traditional business slowly veers towards pyramiding.
MLMers will deny this, but the moment they think of joining a certain MLM, they think of signing up all relatives and associates they can think of right now, especially when their upline tells them they can quickly gain their investment back if they have 2 or 5 people as their downline.
Some will claim to sell directly, but mind you, direct selling is a last resort, when you can't sign up anyone anymore.
Want to earn big? Don't sell. Recruit. The more recruits, the bigger your commission and the sooner you can fly to Disneyland. Sooner you'll be bumping into your own relative, recruiting your other relatives.