I guess we have to disagree here. Software is much more flexible than a building. People have been trying to draw these construction work - software analogies forever now, and it is just bullocks. Making a building is a solved problem. Most interesting software isn't a solved problem, otherwise you wouldn't need that software in the first place. Now is it for Microsoft a good idea to make their Office software accessible? For sure. Is it for me a good idea to make the software I write accessible? What does that even mean in the various contexts? It's not like you add an elevator and an extra bathroom and you are good. Will I be getting paid for the huge amount of extra work I need to do to produce something that's truly accessible and not just a lip service?