Yep. This is literally the lesson that is demonstrated extremely clearly by the software of, ironically, Apple. Really good accessibility support ends up being really useful to all sorts of people in all sorts of ways.

I have near perfect vision/hearing/speech and no motor difficulties, but there are several accessibility features that I enable on my Mac and iPhone because they make it easier for me to do certain things.

Even outside the software realm, examples like adding ramps to entrances instantly makes life a little bit easier for people pushing carts/strollers, which at various times is a pretty huge part of the population.