"The threat is real. And traditional real estate brokers are fighting the Justice Department and lobbying state lawmakers to protect their business model, which generated $60 billion in commissions last year. Associations of Realtors — big political donors in many states — have pushed for state rules to bar real estate agents from providing less than the traditional full suite of services." 

This is what people who can't handle competition do, call in the men with guns to protect their monopoly.