Porter's Five Forces is a widely used framework for analyzing the competitive forces that shape an industry. This framework consists of five factors: industry rivalry, bargaining power of suppliers, bargaining power of buyers, threat of substitutes, and threat of new entrants. Examining each factor can help assess the attractiveness and profitability of an industry, as well as the potential and intensity of new entrants. The threat of new entrants depends on entry barriers, expected retaliation, and entry incentives. Entry barriers are obstacles that prevent or discourage new entrants from entering an industry; these may include high capital requirements, strong brand loyalty, patent protection, or government regulations. Expected retaliation is the reaction of incumbent firms to the entry of new competitors; this could be price wars, advertising campaigns, product differentiation, or alliances. Lastly, entry incentives are factors that motivate or attract new entrants to enter an industry; these could be high profit margins, low entry costs, unmet customer needs, or technological innovations.