You can't find that because any concentration of power means the corruption forces have only very limited surface to pressure, and all the more that surface is actually easy to swap with one molded for even more corruption convenience.
People ever rule through direct decisions or are enslaved into alien agendas on which they have no agency.
Which is exactly why we need a strong federation, and broad participation in democratic process across the bank. Many people can't even be bothered to vote, much less participate in their local, municipal governments. That must change.
It’s easy to solve concentration of power, just distribute it more. Nowadays we can have quite large distributed systems.
It’s nigh impossible to invent a system that truly formalizes collective will with the goal of optimizing for everyone’s best long-term interests, minimizing unhappiness.
In capitalism, the rich get powerful; in socialism, the powerful get rich.
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In countries like the US and UK with FPTP voting systems, proportional representation would help a lot. As it would make it a lot more viable for candidates outside of the main two parties to stand (and actually have a chance of winning).
(although in a UK context, it's looking highly likely that we'll have a "changing of the guard" in the next election with both Reform and Green party making significant inroads at the expense of the more established Conservative and Labour parties)