Politicians are part of the state, which is shaped by the economic system which, in most of the world, is currently capitalism.
The root of the problem is class society and the capitalist system where the ruling class are the capitalists. So it doesn’t really matter who the politicians are until the economic system, and thus the ruling class, are changed, which can only happen by organizing outside the capitalist political system whose only purpose is to protect capital.
Why do you stop at billionaires, and not include the politicians and the people that hold power?
You forgot the journalists who frame narratives and the intellectuals who secrete the ideology that makes it all possible.
Politicians are part of the state, which is shaped by the economic system which, in most of the world, is currently capitalism.
The root of the problem is class society and the capitalist system where the ruling class are the capitalists. So it doesn’t really matter who the politicians are until the economic system, and thus the ruling class, are changed, which can only happen by organizing outside the capitalist political system whose only purpose is to protect capital.