What is the characteristic of an oligopoly market structure?

An oligopoly market structure is characterized by a few large firms that dominate the market. This means that the actions of one firm can significantly impact the other firms in the industry, leading to interdependent decision-making regarding pricing, output, and other competitive strategies. These firms often produce similar or differentiated products, creating a scenario where they must consider the reactions of their competitors when making business decisions.

The presence of only a few firms often results in less competition compared to a perfectly competitive market but more than that found in a monopoly. This can also lead to phenomena such as price rigidity, where firms are hesitant to change prices due to the potential reactions from competitors.

In contrast to the other provided options, the existence of many small firms suggests a competitive market rather than an oligopoly, while a single dominant firm would indicate a monopoly rather than the interdependent nature of an oligopoly. Lastly, oligopolistic markets typically have high entry barriers due to significant capital requirements or brand loyalty, making it difficult for new competitors to enter the market.