Which one was right?

For those of you who are economically illiterate, here's a brief summary of their viewpoints:

Friedman (Jew): The free market does everything right, even regulation.

Hayek (Austrian): The free market does most everything right, but consumer protections and a bare-bones "safety net" are needed.

Keynes (Brit): The free market is fundamentally flawed, and big brother needs to constantly intervene to fix things.