This is a patently false statement from first principles. Anticompetitive behavior to keep a monopoly is illegal, but that is not the only case. Cartels, predat

This is a patently false statement from first principles. Anticompetitive behavior to keep a monopoly is illegal, but that is not the only case. Cartels, predatory pricing, and price fixing are all illegal with or without monopolies and are all considered anticompetitive practices.