Multi-Level Marketing or MLM is just a new way of saying "Pyramid Selling or Pyramid Scheme" Wikipedia states "According to a report that studied the business models of 350 MLMs, published on the Federal Trade Commission's website, at least 99% of people who join MLM companies lose money.[8][9] Nonetheless, MLMs function because downline participants are encouraged to hold onto the belief that they can achieve large returns, while the statistical improbability of this is de-emphasised."
https://en.m.wikipedia.org/wiki/Multi-level_marketing