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摘要
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This paper investigates the sourcing decision of
a multi-input-multi-product firm. Different from Kopel
et al. (2016), we assume the sourcing decision of the firm is not a
make-or-buy decision, the firm can endogenously determine how many inputs to
outsource and how many inputs are produced in-house. Under this circumstance,
we show that both the specific input and common input do not follow the
simple isolated cost comparison. Not only the cost-saving effect shall be
considered, but also the output effect is important. This result holds even
the final good markets are duopoly.
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