In the UK Amway's legal settlement requires them to publish the compensation tiers and how many people are in each tier. So you can see at a glance that almost everybody involved gets nothing.

It doesn't stop people joining, unfortunately. Knowing that Sue, the really successful seeming Super Global Ambassador Tier leader at the presentation on Saturday earned less than a shelf stacker does not stop some people figuring if only they join Amway they'd be doing better.