We really don't. Even your average developer can benefit a lot from the necessary changes needed to make a website or application more accessible to people with disabilities, but for a lot of companies it's really difficult to make the case to management why we should work on something that won't increase their profit margins drastically.
I've done a little bit of pushing forward for some of this stuff myself at companies I've worked at just because it makes you a better developer in general. It makes you more cognizant of all the design decisions that you make when you start thinking of things like 'will this site i'm working on actually work for people using screen readers' and what not.
Unfortunately unless there's either a strong open source push towards standardizing a lot of these considerations or legal requirements to make sites accessible I don't see companies adopting it en masse.
I've done a little bit of pushing forward for some of this stuff myself at companies I've worked at just because it makes you a better developer in general. It makes you more cognizant of all the design decisions that you make when you start thinking of things like 'will this site i'm working on actually work for people using screen readers' and what not.
Unfortunately unless there's either a strong open source push towards standardizing a lot of these considerations or legal requirements to make sites accessible I don't see companies adopting it en masse.