The document discusses five factors that determine the competitiveness of an industry: 1) the threat of substitute products which increases price elasticity of demand, 2) the threat of new entrants which decreases profitability, 3) the intensity of competitive rivalry which is a major determinant, 4) the bargaining power of customers which can pressure firms, and 5) the bargaining power of suppliers which can exert power over firms. For each factor, it provides a list of determinants that affect the level of threat or power.