Corruption can never be eliminated under any system. Regulators can also never be eliminated because people don't want them to be eliminated. People often won't do things voluntarily so it is waste of time trying to come up with a system based on voluntary compliance.
You are presenting a false dichotomy. There are arguments to be had regarding levels of degree of corruption in societies and other means to enforce and regulate society that don't rely on either voluntary human good will or regulators with threats of violence.
Bitcoin is a case in point as it offers regulations and security within the blockchain based upon a combination of game theory , appealing to peoples self interest and greed, relying on cryptographic trap doors, and having a decentralized peer system to verify transactions. In this case it doesn't rely upon people voluntarily complying out of kindness as the protocol insures everyone complies regardless of intentions.
I understand this currently has limited applications but developers are already working on self regulating contracts based upon ricardian contracts using multisig trust less escrow and oracles to offer regulation which aren't as corruptible and inefficient as traditional legal systems.
You may think we are idealistic but keep in mind Bitcoin was never supposed to work and make it thus far, and any competent engineer scoffed at the idea when it was first proposed because how ludicrous it was.... and now we are here.
Yes, some of these people are damaging my investment and I don't like them.
There are bigger things at stake than your investment treating Bitcoin as some paypal alternative stock speculation. There are ethical and moral considerations to ponder.
So this is what I propose: We won't tell you how to use bitcoin and you allow us to peacefully carry out this experiment to fruition.