An oligopoly is defined as "a market structure in which only a few sellers offer similar or identical products" (Gans, King and Mankiw 1999, pp.-334). Since there are only a few sellers, the actions of any one firm in an oligopolistic market can have a large impact on the profits of all the other firms. Due to this, all the firms in an oligopolistic market are interdependent on one another. This relationship between the few sellers is what differentiates oligopolies from perfect competition and monopolies. Although firms in oligopolies have competitors, they do not face so much competition that they are price takers (as in perfect competition). Hence, they retain substantial control over the price they charge for their goods (characteristic of monopolies).

In my discussion I will use the Australian airline industry to present how oligopolies operate, and to show the different behaviours and...