The document discusses the threat of new entrants, which refers to the threat that new competitors pose to current industry players. It is one of the forces that shapes industry competition. Barriers to entry like economies of scale, product differentiation, and capital requirements can discourage new entrants. The threat is high when barriers are low, such as when brand loyalty is low, investment needs are modest, and regulations are weak. The threat is low when barriers are high, for example when brands are strongly established and proprietary technology is required. In conclusion, analyzing the five forces helps firms understand their industry and develop effective strategies.