Which item is NOT one of Porter's Five Forces?

• A. Threat of new entrants
• B. Bargaining power of suppliers
• C. Market segmentation strategy
• D. Rivalry among existing firms

Answer: (C)

Porter's Five Forces examine why some industries are more profitable by focusing on five competitive pressures: the threat of new entrants, the bargaining power of suppliers, the bargaining power of buyers, the threat of substitute products or services, and rivalry among existing firms. Market segmentation strategy is a marketing approach used to divide a market into groups for targeted messaging and product offerings; it is not a competitive pressure described in Porter's framework. The other items—threat of new entrants, bargaining power of suppliers, and rivalry among existing firms—are direct forces that shape competitive intensity and profitability. So, market segmentation strategy is not one of Porter's Five Forces.