[ctoth]

Because they won't. I'm commenting from the perspective of a blind user--I know of what I speak. Note that I explicitly said you would have to architect for it, which you reiterated in your point. Doesn't it make far more sense to make the underlying tooling accessible rather than ghettoizing the content? My main point here is, if there's extra work to be done to make content accessible, that work simply won't be done. Hell, I wouldn't do it either -- a whole extra site template's worth for what? 1% of users? and I am totally blind.