The World Wide Web Consortium (W3C) established the main international standards and accessibility for the World Wide Web. The WCAG is created by the W3C to provide a standard for web content accessibility that can be shared around the world. The WCAG is meant to accompany organizations as a sort of blueprint on how to make their websites ADA compliant.
Yes, in time non-ADA compliant websites will be penalized in the search engines. It's already on their radar. But for now they are still negatively affected, just in an indirect way. Live traffic behavior (user experience) is now factored into Google's algorithm and is a ranking signal. Negative user interactions absolutely have negative affects on rankings.
Gray Reed & McGraw is a Texas-based, full-service law firm with over 120 lawyers in Dallas and Houston. Since 1985, our firm philosophy has been to provide high-quality legal services in a streamlined manner, to provide sophisticated and complex legal advice that is reasonably priced, and to provide big-firm results with small-firm efficiency. For 30 years, we have dedicated ourselves to achieving success for our clients, as they define success – whether that is winning a critical lawsuit, closing a key deal, consulting to save taxes, or just giving good business advice to avoid disputes.
The legal issue for websites is whether website operators are operating “a place of public accommodation.” The statute lists 12 different types of public accommodations including somewhat of a catchall that includes “other sales or rental establishment.” The list, created when the law was passed in 1988, conceivably covers most commercial establishments, but does not expressly include websites.