In order for it to work, and to ensure that nobody gets ripped off, the product needs to be value for money. In fact, it needs to be such value for money, that people on the lower levels continue to buy it, even though, for them, there is no financial reward.This is the only way to avoid the "saturation point" sydnrome which is the downfall of all MLM companies.
So far, no company has marketed a product that addresses that problem. Why would anyone pay twice the price for their soap powder, their facial slime, or their vitamin pills, if there is no financial benefit in the long run?
But what if the soap powder made ironing easier? What if the face sludge made you look ten years younger? Or what if the vitamin pills doubled your energy, restored hair, stiffened your dick and lengthened your lifespan? And what if, the product was cheaper than other, inferior products on the market?