Agree with sibling that this is a straw man. The state exists to protect and serve the capitalist class, not particular capitalists. Actual state policy generally arises out of conflicts between factions within the capitalist class, striving either for direct benefit or for different guesses of what benefits the class as a whole. But the capitalists don't have to provide any benefit to the state to earn its protection, as in your model. It is literally what the state is for.