[dodo53]

That requires people who are (temporarily) able-bodied to be sufficiently foresighted and activist-y - I'm not sure consumer boycotts frequently work (either due to lack of information or coordination or it being too much effort).

I agree I'd like the market to sort it out instead of law, but I don't think it's realistic. Consider access ramps/elevator requirements for example - if a fairly significant chunk of key businesses (say supermarket, banks, workplaces, transport) in an area don't all have them, the area becomes practically uninhabitable by people in wheelchairs.