Sure, but the regulations worked. NatWest and HSBC were brought to book.

Nobody is saying that traditional financial institutions are perfect, but at least they are regulated and at least there are checks and balances in place. By and large the examples people roll out of these institutions behaving badly are examples of the regulators and legal frameworks working the way they are supposed to.

Knight capital were in a risky business and they blew it. It happens. But they're the exception, not the rule. In the wonderful world of Bitcoin, the goings on at MtGox looks like the rule, not the exception.