Interesting this is a taboo topic in here (it will be locked soon).... however is a recurrent question...
There is a difference between a pyramid scheme and multilevel market or mlm and network marketing.
Pyramid scheme is like a Ponzi scheme where money is collected to pay other affiliates and in order for you to collect you need to bring affiliates and so on... pyramids are forbidden in the USA.
Multilevel marketing is where you sell a product and pay commissions at different levels. you can have a legit product and a legit compensation plan divided between a specific number of people.
Network marketing is when you sell a product or service through a network of distributors.
I was afraid of them too. I joined one. I studied the industry became a consultant and then became a distributor myself.
I'm a top earner in the industry and can tell you the other side of the story.
If you ask someone who never had success in the industry their opinion.... you will get that type of opinion.
It's a business that has large quantities of people therefore you will see things similar to what you need to manage large quantities of people. being a church, an organization or a team.