Domino’s position makes more sense if you take them at their word: the problem isn’t technical, it’s that there’s no legal (rather than industry) standard for what makes a website accessible. Corporations don’t like legal uncertainty, and what I suspect Domino’s is after is for the Court or Congress to articulate a standard (or, more likely, point to an existing standard, giving it the force of law) so that all web sites have common and stable accessibilty guidelines.