A store is “a place of public accommodation” unlike a remote service provider like Twitter or an ISP. There is a legal definition for places of public accommodation that varies in detail from jurisdiction to jurisdiction but in general, there are facilities that must be provided and legal requirements that must be adhered to. It is, for instance, illegal to discriminate on race or religious grounds. This gets murky when the accommodation is offensive to the provider on moral or religious grounds, as we have seen in the wedding cake cases. So, it’s a private business and it’s not… The Oberlin college case, though was purely a case of defamation.