The United States Department of Justice filed a major lawsuit against Live Nation-Ticketmaster in May, arguing that the entertainment giant is acting as a monopoly. An additional 10 state attorneys general joined the suit this week, bringing the total to 39 states and the District of Columbia. The plaintiffs also filed an amended complaint, making further allegations of anticompetitive practices from the company.Live Nation-Ticketmaster controls the majority of ticket sales and venue bookings in the U,S,, w ...