Luke_Wilbur 5 Report post Posted April 14, 2016 What happens when a seller with market power has done business with a buyer for years and stops without giving a legitimate reason? Antitrust Laws » Single Firm Conduct » Refusal to Deal A firm with market power refused to do business with a competitor. For instance, if the monopolist refuses to sell a product or service to a competitor that it makes available to others, or if the monopolist has done business with the competitor and then stops, the monopolist needs a legitimate business reason for its policies. Courts will continue to develop the law in this area. Quote Share this post Link to post Share on other sites