Govt's and their Central Banker Puppet Masters are the Biggest Crooks, regulation isn't about public financial security it's about them maintaining control over the money supply.
I'm not saying you're wrong, but the entire western financial model is a massive Ponzi scheme, and you're right, what is there to stop MtGox running off with people's money, so maybe people need to think about that but suggesting the Govt ( Ben Bernanke ) 'regulate' the Bitcoin economy, there has to be a better way or we will end up with the same system we are trying to escape.
No Govt run regulating authority will ever let Bitcoin run as a truly free market monetary system,