Although an MLM company holds out those few top individual participants as evidence of how participation in the MLM could lead to success, the reality is that the MLM business model depends on the failure of the overwhelming majority of all other participants, through the injecting of money from their own pockets, so that it can become the revenue and profit of the MLM company, of which the MLM company shares only a small proportion of it to a few individuals at the very top of the MLM participant pyramid. Participants, other than the few individuals at the top, provide nothing more than their own financial loss for the company's own profit and the profit of the top few individual participants.
Multi-level marketing is a legitimate business strategy, though it is controversial. One problem is pyramid schemes, which use money from new recruits to pay the people at the top, often take advantage of people by pretending to be engaged in legitimate multi-level marketing. You can spot pyramid schemes by their greater focus on recruitment than on product sales.