You're mistaking legality with ethics. The assignment clause makes it legal, but that doesn't mean that the brokers are acting ethically. Ethics revolves aroun

You're mistaking legality with ethics. The assignment clause makes it legal, but that doesn't mean that the brokers are acting ethically. Ethics revolves around ensuring that everybody's interests are protected. A broker is supposed to be a neutral party that does not have an interest in the transaction. The seller's interests are not being represented.