This document discusses different competitor strategies in the market: market leader, market challenger, market follower, and market niche. It provides details on the strategies of market leaders, which include expanding the total market through attracting new customers or increasing usage, as well as defending market share through continuous innovation. Market challengers attack the market leader or other firms to gain market share, using strategies like price discounts or product innovation. Market followers achieve profits by copying the leader's products with slight variations. Market niches focus on small, specialized market segments to meet customer needs better than mass market competitors and charge higher prices.