The relationships between the difficulty of entry and competitive strategies in five industries, chosen for their differing structural contexts, were tested. Statistical support was found for the value of pre-entry analysis of entry barriers and of firms' predicted responses to potential entry. In particular, the creation of idle productive capacity appears to be a potent deterrent to new entrants.
Harrigan, Kathryn. "Barriers to Entry and Competitive Strategies." Strategic Management Journal 2, no. 4: 395-412.
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