How is equipping everyone with expensive wheelchairs a better solution than enforcing a standardized construction code?

And how do wheels help someone when they're trying to jog on a sidewalk?

This is irrationally pessimistic.

Nothing is perfect, but there is a huge, meaningful difference between slightly flawed and completely flawed. It doesn't need to be perfect. It just needs to be good enough.

Many things _can_ be done decently well the first time. Often times it just takes a small cultural mindset shift, and some minor improvements to the approach.