In the model of perfect competition presented in this course, the short-run model, we have seen that there exists a set of potential market prices above the short-run "shutdown point" but below the long-run equilibrium as depicted on the graph below (the prices between P1 and P2). When the market price falls in this area, we conclude that the firm will be losing money. However, it is in their best interest to stay in business. Explain why this is the case. Why does a firm stay in business even if they are losing money? Why does this change when the price falls below the "shutdown point"?
Price
MC
ATC
P1
AVC
P2
Quantity