It's freedom of association. Except for groups who faced historical discrimination and so are protected by law, businesses are not obliged to provide services to anybody the don't want to. Anti-Semites are not a protected class.
The analogy you make, a phone company, doesn't really work. Because of their natural monopoly status, phone companies are obliged to provide common carrier status: they can't arbitrarily interfere between two network users. The ISP equivalent is of course net neutrality, which also doesn't apply here, because domain registration is not a natural monopoly.
Is a domain registration not a natural Monopoly? I was under the impression that if I wanted to but a domain name I would have to do it through a domain register. Is there a way that I can get a .com domain directly from the US government?
> All persons shall be entitled to the full and equal enjoyment of the goods, services, facilities, and privileges, advantages, and accommodations of any place of public accommodation, as defined in this section, without discrimination or segregation on the ground of race, color, religion, or national origin.
GoDaddy is not a restaurant, hotel, or any other "public accommodation" business as defined by law.
AFAIK, GoDaddy could also discriminate against Jewish customers (which is a protected class) all day long and not be in violation of federal U.S. law
Generally they settle those cases but judges think it’s likely enough for them to be places of accommodation to proceed. A website acts as if the ADA doesn’t apply at their peril.
I wonder how far this will eventually extend. For example, what about websites that have games on them (flash, html5, etc.)? What about websites that host game clients to be downloaded? MUDs could be decently accessible, but most games aren't at all accessible.
Reasonableness is generally a part of determining accommodations for disabilities. For many games, there are no reasonable steps to make them accessible to someone with a sensory or mobility impairment. But there are also reasonable steps that can be taken, like captions for recorded dialog for the hearing impaired or color/pattern alternatives for people with color vision deficiencies (I don't think color vision deficiency meets the legal definition of a disability but it's still something to keep in mind).
A site that offers games to download can be very accessible but the games themselves might not be and don't have to be; not every product a store sells has to be usable by every potential customer. That's not a reason to not make the site accessible; e.g. a disabled parent should be able to download a game for their non-disabled child.
The analogy you make, a phone company, doesn't really work. Because of their natural monopoly status, phone companies are obliged to provide common carrier status: they can't arbitrarily interfere between two network users. The ISP equivalent is of course net neutrality, which also doesn't apply here, because domain registration is not a natural monopoly.