Congratulations if you’ve made it this far. I’m sure it wasn’t easy (although I kind of hope it was). Hopefully, some of the clutter and confusion of the web accessibility guidelines has been resolved, and you are now in a better position to tackle any web accessibility issues that come from bad or not-as-well-informed design decisions.
The truth is, though, we’ve not answered one of the most important questions: Does any of this matter? Would websites be less successful as products if they implemented fewer accessibility guidelines ...