In an MIT lecture on The Financial Crisis, the Recession, and the American Political Economy, Charles Ferguson, author of the documentary Inside Job, describes the U.S. political system as follows:
- The two parties have formed a duopoly in which both parties have agreed to agree on money issues and to disagree on social issues.
- Both parties serve the financial sector and the wealthy. Thus they agree on (de-regulation) / (non-)enforcement / (no )criminal prosecution for the financial sector, as well as on antitrust, campaign financing and tax policies.
- Both parties agree to retain their base through conflict over social policy: Religion, education, evolution/creationism, gay rights, abortion, environment, war, terrorism.
- The sustainability of the duopoly depends upon barriers to entry against newcomers via ballot qualification, redistricting/gerrymendering, campaign and advertisement costs, lack of parliamentary system and lack of ranked-order voting.
While I agree on this 'duopoly' description, Ferguson has a few points wrong.
War and terrorism are no longer social issues but are about money making as well as about keeping potential competitors away from the system. Therefore both parties agree on keeping the wars going and on keeping the terrorism bogeyman alive.
That a parliamentary system instead of a presidential one is better in keeping the overwhelming influence of the financial sector and the wealthy away is disproved by the United Kingdom. In economic matters it works just the same way as the United States with the same catastrophic results. Even a parliamentary system like Germany's, which allows new parties to grow and to catch decent shares of votes (the Greens, the Left), is not that much different. After a few years the new parties simply get cooped by the system be that by bribes or other inducement.
A solution could come from a constitution and the judiciary. But at least in the case of the U.S., the judiciary has been bought too.
A widely known and successful alternative system in a different country or bloc of countries could create public demand to adjust the duopoly system and the reign of money. The existence of the example of the Soviet bloc was the reason for some decent social-democratic policies in Western Europe after WWII. The elimination of that example and competition moved the "western" systems to the right.
There are currently three areas where a new better system could grow and set an example which would necessitate the "western" model to be adjusted to better care for its people. One is the bloc of social-democracies in South America. One is the Confucian system in China and potential third candidate could be a system based on Islam.
How much the-powers-that-be of the current "western" systems fear the competition of these other social-system can probably be evaluated by measuring the amount of energy they put into fighting each of them.