I think a business, supplying a service or product to its customers, should be allowed to discriminate through racism or homophobia. But I think utilities and hospitals should be exceptions. If a gay/ black person needs to use a phone, get running water, or receive medical treatment, they should be entitled to the same service as a straight white person. I know hat you're post was about IQ, not so much race. Sorry that this is a bit of a straw man.