Developing Strategy through External Analysis

Read this section to learn the difference between internal and external forces and how they affect organizations. Attempt the exercises at the end of the section.

Porter's Five-Forces Analysis of Market Structure

New Entrants

The likelihood of new entry is a function of the extent to which barriers to entry exist. Evidence suggests that companies often find it difficult to identify new competitors.  Identifying new entrants is important because they can threaten the market share of existing competitors. One reason new entrants pose such a threat is that they bring additional production capacity. Unless the demand for a good or service is increasing, additional capacity holds consumers' costs down, resulting in less revenue and lower returns for competing firms. Often, new entrants have a keen interest in gaining a large market share. As a result, new competitors may force existing firms to be more effective and efficient and to learn how to compete on new dimensions (for example, using an Internet-based distribution channel).

The more difficult it is for other firms to enter a market, the more likely it is that existing firms can make relatively high profits. The likelihood that firms will enter an industry is a function of two factors: barriers to entry and the retaliation expected from current industry participants. Entry barriers make it difficult for new firms to enter an industry and often place them at a competitive disadvantage even when they are able to enter. As such, high-entry barriers increase the returns for existing firms in the industry.