IANAL, but this sounds like a potential anti-trust case to me. "Predatory pricing practices may result in antitrust claims of monopolization or attempts to monopolize. Businesses with dominant or substantial market shares are more vulnerable to antitrust claims. However, because the antitrust laws are ultimately intended to benefit consumers, and discounting results in at least short-term net benefit to consumers, the U.S. Supreme Court has set high hurdles to antitrust claims based on a predatory pricing theory. The Court requires plaintiffs to show a likelihood that the pricing practices will affect not only rivals but also competition in the market as a whole, in order to establish that there is a substantial probability of success of the attempt to monopolize." (http://bit.ly/12pG6gq)