ChipMixer didn't commit fraud nor did they cheat their customers. It was a mixing service that got shutdown and taken offline by the FBI and Interpol. Their service worked exactly as advertised. It allowed anyone to mix their coins: you, me, or hardcore fraudsters. It's partially because it was used to wipe the history from the coins that came from malicious activities that it was taken down. The bigger reason is that no government in the world want you to be private or free.