I dislike the hard-link comparison to startups. I personally know people who got sucked into MLMs and are almost exclusively lower income families. There are literal playbooks, talking points from the organized MLM's themselves on how to "recruit" your families and get them to buy their own product so they raise in "status".
If you're connected to military moms' or lower income groups you know how pervasive and destructive these MLMs can be to these families. Not sure if you have any idea, but it is incredibly frustrating, disheartening to talk to them about how it's hurting them. In my case, it was their own cousin who got them involved and ultimately into debt. Not a 20's single-no-attachment, but this friend has a family to care for. I get angry simply remembering this. The only thing worse was for profit education.
Startups simply aren't at that level and even bringing this argument into play detracts from the focus of how destructive MLMs are.