The Benefits of an Accessible Website - Part 2: the Business Case
http://www.webcredible.co.uk/user-friendly-resources/web-accessibility/benefits-of-accessible-websites-1.shtml

Moss, Trenton
Webcredible
2004

Abstract:

The Disability Discrimination Act states that service providers must not discriminate against disabled people. A website is regarded as a service and therefore falls under this law. Some organisations are changing their websites, but many are seemingly not making the adjustments. Disabled people don't access their website, they say, so why should they care? There are, however, two very good reasons as to why businesses should start taking these issues seriously: an accessible website will make you more money; an accessible website will save you money.