In the context of equity investments, understanding the competitive forces within an industry is crucial for investors. One of the most recognized frameworks for analyzing these competitive forces is Michael Porter's Five Forces Model. This model identifies five key factors that influence the competitive landscape of an industry.
Consider the operating environment of a company in the soft drink industry. This industry has several competitors, including major brands and smaller niche players. Recently, there has been an increase in the threat of substitutes, such as bottled water and health beverages. Also, the industry experiences moderate bargaining power among suppliers and buyers.
Which of the following competitive forces is likely to have the strongest influence on the profitability of the soft drink companies in this scenario?