I disagree with characterizing Person A not wanting something from Person B as person B struggling to exert power.
When Diogenes asks Alexander to move aside, it demonstrates the limits of this power, and therefore Alexander's virtue as a ruler: someone who doesn't want anything gets exactly as much benefit from this king as from anyone else. If the only thing Alexander can contribute is threats, that would simply make him unvirtuous - and equivalent in power to any armed madman.
This seems like a trivial fact to me, or I am missing what is notable about this “virtue”.
> If the only thing Alexander can contribute is threats, that would simply make him unvirtuous - and equivalent in power to any armed madman.
I guess so in this specific interaction, but it would be ridiculous to say a person that commands armies is equivalent in power to any armed madman in the big picture. My responses are in the context of societies using money as a tool to incentivize people, to which I am not aware of there being a better known alternative.