The customer is able to garner the benefit of the consumer surplus because one firm is competing with other firms for the customer's business, so the firm must charge a lower price than it could if it were a monopoly supplier. 客户能够获得消费者剩余的利益,是因为一家公司正在与其他公司竞争客户的业务,因此该公司必须收取比垄断供应商更低的价格。