I do not recommend to anyone relying on the PowerPoint slides for making any decision on whether to invest on Coca-Cola stock. These slides were published for potential employers to gain information about my educational background, not for financial advice.
*Update / Correction: Pepsi was stated as a substitute under the discussion of Porter's Five Forces. This cannot be true because Porter's Five Forces clearly states that a substitute cannot be competitors' similar products. Instead, a substitute is considered an entirely different product groups. So, in this case, Pepsi is not considered a substitute for Coke but Gatorade, Budweiser, coffee and tea.