The reality is money buys elections.
Given the choice between 10 donors that can afford to just drop well above the median annual salary (albeit as 'independent' documentaries) and trying to rally 50k mom-and-pop donors that contribute $20 each, it's a no-brainer which is the easier route to electoral success.
The question is do you want to be represented by the voice of the 10 or the 50k?
We're not talking about overturning the first. We're trying to figure out how to reconcile the first with decentralizing some very centralized influence over public policy.
You should be distrustful of any centralized political system. That's what we have, not by design but by reality.