Because the monopolist has no enemy in the market, customers have only one choice and the monopolist can use some strategies to effect their desire to purchase.

• 由于垄断者于所在市场中并无竞争者，而消费者仅有一种选择，因此垄断者能以定价及发售时间间隔作为控制变数，而不须顾虑消费者选择其它竞争者之产品。