One thing that always surprises me is how many people take offense to the suggestion to make their software/websites more accessible, as if it's trampling on their artistic freedom. Even here on enlightened HN, the top-most comment seems to worry about some "Orwellian" future where non-accessible websites are verboten. I prefer to look at making things accessible in two more positive ways: 1. It's a challenge; any de…
And money. Lots and lots of money. Sometimes, especially with single-page sites, it can take more than 100% of the base budget to implement the progressive enhancement necessary for screen readers and the like.
Customers don't want to pay for it, and I'm not going to do it for free.
Your point in 2 needs to be backed up by some numbers. You can't appeal to someone's internal economist without some statistics.