Travel agents advised to make websites accessible

Travel Agent Central has this article on making websites accessible to people with disabilities.
The article is really written for the most part as a warning to agents about the opirfalls of ignoring accessibility standards. Why not emphasize the positive of additonal customers? yeah I know new business is not nearly as attention grabbing as the threat of financial consequences. Whatever works, I suppose to get the accessibility. It does incldue the follwoing statement:

Indeed, by achieving website accessibility for disabled customers, travel agencies can offer services to individuals who would otherwise seek out competing businesses who offer more accommodating services and invites the greatest amount of user traffic and potential revenue opportunities.