It is not neccessarily the founder who benefits the most. Anyone in the pyramid can eventually become the largest beneficiary.
I hadn't say it is the place where you can wage more, I said it is the smartest place to be.
In a pyramid the founder takes few to no risks, it's an «I give the pocket, you give the cash» sort of business.
The others bellow are gambling until it stops and eventually can wage more, but are under way more risk.