Only pure liberals think leaving the free market by itself with minimal regulation is a good thing. Capital attracts capital and becomes basically a snowball.
But is the solution a market controlled by a centralized entity? You just pointed out politicians can also be corrupted. So… Giving more power to an entity that can be corrupted is the solution?
The problem is corruption. Any system you can propose can be fucked up by corruption. The justice system, politicians and government can be corrupted under any system because they are human.
If I’m wrong, just propose any system and I’ll tell you how it crumbles because of corruption.