When an incumbent firm uses an edge pricing strategy: (w) this can maximize short run profits and discourage entry in the market. (x) this may not be maximizing short run profits, but this can make positive economic profits over the long run. (y) the firm can discourage entry in the market by pricing below costs. (z) the firm can maximize short run profits, but this may or may not earn positive economic profits within the long run depending on whether other firms enter the industry.
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