The universal good, and unappreciated reality, about accessibility is that it benefits everyone. Wheelchair ramps aren’t limited to wheelchairs. I have above average hearing despite my advancing age and I choose to apply subtitles to digital movies about half the time because it provides me a better more enriching experience. Solving for color contrast limitations benefits everyone even when people have perfect visio…
In fact, assume cost is not a good argument – then why should it even be legal to compile programs that aren’t universally accessible? It’s always beneficial, and just a matter of cost after all.
Or are you perhaps being completely one-sided and unreasonable?