"the inequality arises from the high income of those private enterprises that do business with the federal government, most particularly in law and lobbying." - And all this is a result primarily of Democratic Party policies. Democrats dominate the Administrative State that these businesses are contracting with. Democrats put more money through government making it bigger than Republicans do, which inflates these businesses. Democrats prefer to use government's systems of mass coercion to force their will on others in ways that these businesses profit from, whereas libertarians prefer non-governmental voluntary organizations and relationships.