Citizen rights trump business rights. Private citizens have the right to deny people entry into their homes for any reason. They have the right not to talk to someone for any reason. They also have the right to not be denied service for discriminatory reasons. Because allowing something like that to occur creates significant changes in the socio-economic environment of the country that damages our ability to function as a whole. We are STILL recovering from the economic gaps created by segregation. When you choose to enter into the business world, you do so under the agreement to abide by the laws that protect our citizens. These are the same laws that protect our citizens against monopolies and price gouging. If you don't want to abide by those laws, close up shop and seek income elsewhere.