As long as the state, or whoever manage and control the state machine, utilize "money" to purchase man power (to get whatever tasks they need to accomplish or whatever goods they need to build), it's impossible to bar money from the system. It is part of the system.

Democracy has always been like this, or worse, when it is not judged by money, but by your ancestors. Capitalism smashes Feudalism by bringing power to a lot of people than the Feudal lords agreed with, and then it's pretty much "money buys everything" mode.