So whom should the nurses sue to recover their theoretical damages in that case?

If I decide to groom my dog myself, can I expect a lawsuit down the road for my non-consumption of professional dog grooming services if any dog groomer is a member of any minority class? After all, you can't be sure that I'm just a cheapskate who likes washing my dog; I might be racist/classist/sexist.

In case it's not clear, I view the decision to consume in a free market to be a free choice and not subject to judicial review.