Companies seeking to enter an industry also anticipate the reactions of firms in the industry.
An expectation of swift and vigorous competitive responses reduces the likelihood of entry.
Vigorous retaliation can be expected when the existing firm has a major stake in the industry, when it has substantial resources, and when industry growth is slow or constrained.
Locating market niches not being served by incumbents allows the new entrant to avoid entry barriers.
Small entrepreneurial firms are generally best suited for identifying and serving neglected market segments.