Would the plaintiff still have a case if the defendants staffed a phone line with someone available to navigate the websites by verbal instruction and made the availability of that service obvious? (I believe phone companies already provide speech <-> text services for people who can't speak and/or hear.) Seems like a decent compromise.
I've seen some web sites recently that have small text at the bottom reading something like, "Need help reading this web site? Call 800-xxx-xxx for assistance."
I don't know if that stands up in a court of law, but it's an interesting way to handle the problem.
