The negative slope of the demand curve means that the price charged by the monopoly is greater than marginal revenue. As a profit-maximizing firm that equates marginal revenue with marginal cost, the price charged by monopoly is greater than marginal cost. The inequality between price and marginal cost is what makes monopoly inefficient.

Profit Maximization

Inefficiency

A typical profit-maximizing output determination using the marginal revenue and marginal cost approach is presented in this diagram. Feet-First Pharmaceutical maximizes profit by producing output that equates marginal revenue and marginal cost, which is 6 ounces of Amblathan-Plus in this example. The corresponding price charged is $7.50.

This profit-maximizing production is not efficient. In particular, the price is $7.50, but the marginal cost is only $4.50. Society is producing and consuming a good that it values at $7.50 (the price). However, in so doing, society is using resources that could have produced other goods valued at $4.50 (the marginal OPPORTUNITY cost). Society gives up $4.50 worth of value and receives $7.50.

This is a good thing. It is so good, that society should do more. However, the monopoly is not letting this happen. Feet-First Pharmaceutical is not devoting as many resources to the production of Amblathan-Plus as society would like.

An Efficient Alternative

A comparison between monopoly and perfect competition indicates:

• Monopoly produces less output than perfect competition. In this example, monopoly produces 6 ounces of Amblathan-Plus compared to about 7.5 ounces for perfect competition. The Feet-First Pharmaceutical monopoly does not allocate enough resources to the production of Amblathan-Plus.


• Monopoly charges a higher price than perfect competition. In this example, the monopoly price is $7.50 per ounce versus about $6.75 per ounce for perfect competition. The Feet-First Pharmaceutical monopoly is NOT efficient because it produces at a quantity in which price is greater than marginal cost.