Supplier power is a mirror image of the buyer power. As a result, the analysis of supplier power typically focuses first on the relative size and concentration of suppliers relative to industry participants and second on the degree of differentiation in the inputs supplied. The ability to charge customers different prices in line with differences in the value created for each of those buyers usually indicates that the market is characterized by high supplier power and at the same time by low buyer power (Porter, 1998). Bargaining power of suppliers exists in the following situations.
The nature of competition in an industry is strongly affected by suggested five forces. The stronger the power of buyers and suppliers, and the stronger the threats of entry and substitution, the more intense competition is likely to be within the industry. However, these five factors are not the only ones that determine how firms in an industry will compete - the structure of the industry itself may play an important role. Indeed, the whole five-forces framework is based on an economic theory know as the "Structure-Conduct-Performance" (SCP) model: the structure of an industry determines organizations' competitive behaviour (conduct), which in turn determines their profitability (performance). In concentrated industries, according to this model, organizations would be expected to compete less fiercely, and make higher profits, than in fragmented ones. However, as Haberberg and Rieple (2001) state, the histories and cultures of the firms in the industry also play a very important role in shaping competitive behaviour, and the predictions of the SCP model need to be modified accordingly.
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