Joe Smith argues, “Your analysis of the five forces that affect industry profitability is incomplete. For example, in the banking industry, I can think of at least three other factors that are also important--namely, government regulation, demographic trends, and cultural factors.” His classmate Jane Brown disagrees and says, “These three factors are important only to the extent that they influence one of the five forces.” Explain how, if at all, the three factors discussed by Joe affect the five forces in the banking industry.