Even with a legitimate MLM and product, the ultimate enemy is math. The structure of an MLM is inherently self-defeating. If, for example, the company starts with just six people, and each level has to recruit six people of their own, in just twelve levels you have over two billion people. Even without complete recruitment, you quickly saturate a population. Further, every person you recruit is now a competitor. They may share your social network, and you’ll both be recruiting from the same pool.