Accessibility has 'business benefits' as potential increased audienced, reduced bandwidth costs, good PR and much more.
Please have a look at these resources. You might begin thinking different.
Why Accessible Web Design is important for Business: http://www.scotconnect.com/show.php?contentid=81
Auxiliary Benefits of Accessible Web Design: http://www.w3.org/WAI/bcase/benefits.html
Attractive, Accessible Web Sites (AKA disproving the myth of ugly) http://www.accessify.com/articles/at...ible-sites.asp