A great deal of changes proposed to make disabled peoples' lives easier end up having many fringe benefits for the non-disabled. The classic example is strollers or hand trucks going up the little dip on the sidewalk rather than having to lug them over an enormous curb.

The cost argument starts looking weak when you observe there's always billions of dollars shaken from magical couch cushions whenever it's time to wage another losing war.

In terms of the web two of the greatest things we could do for accessibility: (1) eliminate GDPR pop-ups (and all pop-ups and senseless modal dialogs) and (2) eliminate cloudflare harassment, ReCAPTCHA harassment and anubis harassment. Any of those things should be an immediate F rank for WCAG.

The cost argument is a cover for institutional cruelty. Some people really really want to be cruel. Usually those folks are the most emotionally damaged people IME.