In general, a seller has the right to choose its business partners. A firm's refusal to deal with any other person or company is lawful so long as the refusal is not the product of an anticompetitive agreement with other firms or part of a predatory or exclusionary strategy to acquire or maintain a monopoly. This principle was laid out by the Supreme Court more than 85 years ago:
The purpose of the Sherman Act is to... preserve the right of freedom of trade. In the absence of any purpose to create or maintain a monopoly, the act does not restrict the long recognized right of a trader or manufacturer engaged in an entirely private business, freely to exercise his own independent discretion as to parties with whom he will deal.
This remains a fundamental rule of federal antitrust law and draws a line between legal independent decision-making on the one hand and illegal joint or monopolistic activity on the other.
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