Inside the Trump University 'playbooks'

[bucolic_frolic]

5. Upselling hardly a trade secret

nor is team marketing where they gang up on you and tout their expertise

Just go to a new car showroom and let the sales person, the cohorts, the sales
manager, the finance manager, the general manager all pump, push, twist, poke,
prod you along

Network (pyramid) marketing not much different, though enrollment fees in many
states limited to a specific amount, so your downside is known upfront

One could hope it had Ponzi elements, if proceeds were used to market to others,
but that's usually evidence of a business stretched too thin without other capital.
Oops. Maybe?