If the market had one supplier that was a monopoly then there would be only one firm operating in the market, with no competition.
In a market, a monopolist tends to charge a price higher and produces fewer units than a competitive market structure. Because of such higher monopoly price, the area of consumer surplus tends to decrease.
The market power of a monopoly affects both consumer and producer surplus as a firm is able to earn positive economic profits, and as it is a monopoly, other firms are unable to enter their market and cannot lead to competition.
Hence, a firm is a monopoly if it can ignore other firms prices.
To learn more about monopoly here:
https://brainly.com/question/17001862
#SPJ4