Porter's Five-Forces Analysis of Market Structure

Numerous or Equally Balanced Competitors

Intense rivalries are common in industries with many companies. With multiple competitors, it is common for a few firms to believe that they can act without eliciting a response. However, evidence suggests that other firms generally are aware of competitors' actions, often choosing to respond to them. At the other extreme, industries with only a few firms of equivalent size and power also tend to have strong rivalries. The large and often similar-sized resource bases of these firms permit vigorous actions and responses. The Fuji/Kodak and Airbus/Boeing competitive battles exemplify intense rivalries between pairs of relatively equivalent competitors.