The few people with any power in politics are expelled by the system itself. They're either not viable to begin with or if they somehow absurdly get into the system, it marginalizes them. They're called crazy or otherwise derided and made irrelevant through all the modern mediums we have available to us and society itself is too pre-occupied with what church they go to or if they ever smoked pot.
I didn't say I have any meaningful way to contribute or improve the process. Nobody else really does, either. It's not merely as simple as "well, run for office and be the first honest person in the government!". Very few people can even stand up against a single company and fight injustices. What hope does anyone have against the corrupt government plus all of the companies - together?
I know, this is all very anti-American. We're raised to believe that there's always hope and "we the people" and "power to the people" and all. Just check the right box in the voting booth or volunteer your time to support the right magic politician that we've been waiting a couple centuries for.
There is a critical point past which an organism is so consumed with cancerous tissue that nothing can be done to save it.