Revenue and costs $34 ATC 29.50 27 21 13 Demand MR 600 800 940 1160 Quantity Figure 15-4 shows the demand and cost curves for a monopolist. Refer to Figure 15-4. What is likely to happen to this monopoly in the long run? New firms will enter the market to eliminate its profits. It will expand its output to take advantage of economies of scale so as to further increase its profit. It will be regulated by the government because of its excess profits. As long as there are entry barriers, this firm will continue to enjoy economic profits