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Insufficient Entry and Consumer Search

Abstract This study considers a search market with an outside option and shows that entry may be insufficient. When a firm enters the search market, the price decreases, and consumers can search for more products, which increases the market demand and improves social welfare. However, firms do not internalize the effect, and insufficient entry can occur. Additionally, insufficient entry is likely to occur in a search market with low search costs and/or an attractive outside option, as these factors increase the socially optimal number of firms but decrease the firms’ profits.