If users receive remuneration from other users for access to the full version of the platform, then what is the point of giving them an additional remuneration for being in the top-10? I think, this is just an additional and pointless expense.
I think you misunderstood.
Suppose, I am ranked 1. Then you, a common user, can pay me to copy my portfolio. This is why users should try to maximise their returns and get listed as a top 10 manager