How to Use "oligopoly" with Example Sentences

1. This industry is ruled by only 60 companies which have created an oligopoly .
2. Internal economies generate an oligopoly market structure .
3. Horizontal merger with capacity constraint in cournot oligopoly .
4. In the past , the chinese have complained loudly that the miners behave like an unaccountable oligopoly .
5. Since liquidity has proved most important to derivatives traders , the market leans towards a natural oligopoly .