Money is that power.

You cannot have billionaires and them not be immensely, structurally powerful.

That's the entire point of capitalism, that resources, including labor, be directed by those with capital.

Believing you can have a single human being in control of a non-negligible percentage of all resources of a country, and they wont somehow be actually powerful or influential is moronic.

Taking the power away from billionaires literally IS taking their money.