Suppose that you are the manager of a large retail store that is currently experiencing a shoplifting problem. Every hour, $25 worth of merchandise is being stolen from your store. Suppose that a security guard would completely eliminate the shoplifting in your store. The hourly market wage for a security guard is $33. If you were interested in maximizing your profits, should you hire a security guard?

Consider two similar industries, portal crane manufacturing (pcm) and forklift manufacturing (flm). the pcm industry has exactly three incumbents with annual sales of $800 million, $200 million and $100 million, respectively. the flm industry has also exactly three incumbents, with annual sales of $500 million, $450 million and $400 million, respectively. which industry is more likely to experience a higher level of rivalry?