The truly free market operates on contract principles, i.e. we honor commercial and personal financial agreements. People are not perfect and therefore some will attempt to avoid or break duties attendant to those agreements. The best regulation is an impartial judiciary providing a remedy for these breaches. Certainly the argument can be made that the market will eventually remedy those wrongs by putting such unscrupulous operators out of business, but an impartial and predictable judiciary provides a more immediate remedy with allocation of damages that can serve to punish the wrongdoers and make whole the victims in a more predictable and public manner.