Oligopoly

In economics, an oligopoly is when a market is controlled by a small number of sellers. Very often, there are only three or four of them. Oligopolies are very common. The main feature of the oligopoly is that a decision made by one market player influences the whole market.

Examples

In many countries, some country-held companies were privatized. Very often, this privatization lead to oligopolies. In many countries, there are only a handful of companies providing networks for mobile phones. They control the prices for accessing the network. That is why using a mobile phone is often much more expensive than using a land line one.

2-trains run by private setors are much more costlier then that runned by the governments.as govt give rights to private sector to get hold of some sectors they take advantage of it..

Other websites

• Microeconomics by Elmer G. Wiens: Online Interactive Models of Oligopoly, Differentiated Oligopoly, and Monopolistic Competition
• Vives, X. (1999). Oligopoly pricing, MIT Press, Cambridge MA. (A comprehensive work on oligopoly theory)
• Oligopoly Watch A blog on current oligopoly issues from a business and social perspective