In a monopoly market, what is a key consequence of price-setting above marginal cost that leads to inefficiency?

In a monopoly market, a key consequence of setting prices above marginal cost is that it leads to inefficiency because fewer people can afford the product. When a monopolist charges a higher price, they limit the number of consumers who can buy the good, resulting in lost potential sales. For example, if a company sells a medicine for $100 instead of $50, some patients who need it may not be able to buy it at the higher price. This means that while the monopolist makes a larger profit, society loses out because not everyone who needs the product can access it. Ultimately, this creates a situation where resources are not being used in the most beneficial way for everyone.