Porter's Five Forces Model | Strategy framework

Porter's Five Forces - The Framework Explained - A Guide to Analyzing Competitiveness Using Michael Porter's Strategic Model

Which of the following is a drawback of Porter's five forces model? Multiple Choice Managers cannot determine the changing speed of an industry or the rate of innovation. It fails to provide a basis for deriving implications for a firm's strategic position within an industry. The model describes competition narrowly as a firm's closest competitors. The model fails to consider that the threat of substitutes can come from outside a given industry.