If you do get sued, if you immediately remediate your website, you may be able to get the lawsuit dismissed on mootness (there’s no longer anything in dispute, i.e. plaintiffs are arguing your website is inaccessible but you’ve already made it accessible). This definitely does not mean you should wait to fix your website but it does mean you may have an out.
"I’m a couple years away from retirement and have a very limited budget and after talking to some other web developers through thumbtack I quickly realized I was not going to be able to afford a website built by anyone but myself. Then I got a response from Jean Johson of B’yond Media telling I was chosen to get my free website. Crazy, is all I can think of. Why me, and is this too good to be true. But after speaking with Jean for awhile in the phone I soon realized that I was really going to be getting an awesome e-commerce site for free. I’m over the moon and have already started gather information for them for my site. They were a God send. I can’t think of anyone I would rather do my website free or not than Byond Media and Jean Johson as my project manager. You must give them a try. I’m sure you will be as happy as I am."
The Department of Justice (DOJ) has specifically stated in rulings that websites should be designed so they are accessible to individuals who have vision, hearing, and physical disabilities. There’s a growing body of case law where the DOJ required companies to provide an ADA compliant website and levied hefty penalties when sites failed to measure up.
This is an article that most other website developers probably don’t want you to read. The reason is that most other web designers basically like to think of themselves as all-powerful wizards with magical powers. And they use complex technical jargon and terminology to intimidate and mystify their clients into thinking that what they do is more complex than it is.