Monopoly profits can be significant, especially if the monopolist is able to maintain its position for a long period of time. However, monopoly profits are not always sustainable in the long run, as they tend to attract new entrants to the market, which can eventually lead to increased competition and lower prices. Monopoly profits can also lead to inefficiencies and reduced consumer welfare, as the monopolist may have little incentive to innovate or to provide high-quality products or services.

Monopoly profits are generally viewed as undesirable, and governments may intervene to regulate or break up monopolies in order to promote competition and protect consumer welfare.