The Free Market philosophy assumes that a person makes as much money as s/he is worth. In real life, this is not true. The average Fortune 500 CEO makes 488 times more than his/her average employee. No one's work can possibly be worth 488 times more than another's. Beyond the Fortune 500, it is common practice for entrepreneurs to make a small, initial investment, build the business on the backs of others, and then receive a disproportionate amount of the rewards.
However, we cannot blame Free Markets for our economic disparity. We can no more blame Free Markets for unfair compensations than we can blame corruption on democracy. We can only blame economic disparity on human greed and business structures that encourage greed. Just as corruption thrives when democracy is ignored, greed thrives in businesses that are run like a dictatorship. The inevitable end of corporate dictatorship will create an environment in Free Markets where people make as much money as they are worth.
Democratic businesses compensate people for what they are worth. The average democratic business pays less than 20 times more, than its average employees, to its highest paid employee. Moreover, democratic businesses compensates employees with ownership for their investment of time and effort. In sum, democratic businesses empower employees to resolve their own disputes between labor and management, and therefore, obviate the need for most government intervention and regulation.