You're right, my mistake.  We are in agreement!

I think it is inevitable that different max profit settings will lead to changes in the relative proportions of the bankroll, which will tend to amplify or dilute people's returns.  That's not different in principle from what we have now, when the investments or divestments of other people affect my return.  I don't see this as a problem, as long as the process is transparent and people have enough information to make decisions.