One of the characteristics of a monopolist is that, he can influence

A monopolist has the ability to influence both the price and quantity of a good or service in the market. Unlike in a competitive market, where there are many buyers and sellers and no single entity has control over the market, a monopolist is the sole provider of a good or service in the market. Because of this, the monopolist has the power to set prices higher than they would be in a competitive market, as there are no other producers to compete with. Additionally, the monopolist can also control the quantity of goods or services produced, as they have no incentive to increase output to meet demand and lower prices. Overall, a monopolist has the ability to exert significant influence over the market, which can result in higher prices and less output than would be seen in a competitive market.