All I want in life is an unfair advantage. I'm not sure who first said that maxim, but it's one of the keys to successful investing. Companies with unfair advantages are some of the best investments you can ever make. Some unfair advantages stem from government actions, such as the virtually unlimited free money that banks now receive. Other companies' unfair advantages have been built up over many years of being in business, or within the impenetrable niche a company has learned to dominate.