[BCPVP]

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but existance of the regulators whose purpose, in all, some or part, is to prevent predatory pricing from occurring, does prevent the statement from being logically sound. by "the statement" i mean that "because predatory pricing has never been observed, it could therefore never work in the real world."

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I won't go as far as saying 'predatory pricing' is unequivocally impossible, but it is such a difficult strategy to pull off for reasons mentioned that it doesn't warrant ceding the power to destroy companies to the government because of the incentive for any poor competitor to attempt to use such power to hobble his competition. There's been several books and papers detailing the history of exactly that type of behavior being engaged in by poor competitors.