Real World Firm Economies of Scale Section 5 introduces economies of scale and dives into the difference between economies of scale, constant returns to scale, and diseconomies of scale. In this discussion, we will attempt to bring this to life by considering and speculating on real world firms. For this the task is to: Pick a firm in the real world and explain whether you would think they would be considered in the range of economies of scale, diseconomies of scale, or constant returns to scale. In your firm's market, explain whether you think their market can support several firms that are sized differently or if their market must have identically (or nearly identically) sized firms and explain why this might be for your firm's industry.