Americans should be mad at both political parties. And, yes, both parties hold an oligopoly over our electoral process, particularly when it comes to presidential politics. Little wonder, of course, since the executive branch has grown exponentially in power, beginning in the 1930s. Imagine if presidential debates included a couple of candidates from other political parties. But, of course, it is difficult for that to occur, based upon the rules of the bipartisan commission which controls those. American politics is much like American (big) business, governed by rules which protect and insulate those at the top.