That carousel or image slider on your site looks beautiful. That stunning video on autoplay may have cost thousands to produce. Users with cognitive limitations, however, may not comprehend your information quickly enough before the view changes or your video ends. Other users may want to start over, or go back and review something they saw or heard.
While the influx of the dot.com world eliminated the need for brick-and-mortar locations for all stores (think eBay or Amazon), all of the above categories typically had a headquarters, if not multiple locations where one could visit and interact. This would ensure a unique experience, often depending on the individual needs of the visitor. For instance, when visiting a municipal building or institute of learning, a variety of methods are available to get to higher floors (stairs, elevators, ramps and escalators).
State and local governments will often post documents on their websites using Portable Document Format (PDF). But PDF documents, or those in other image based formats, are often not accessible to blind people who use screen readers and people with low vision who use text enlargement programs or different color and font settings to read computer displays.
Courts have essentially taken three positions when approached with this issue. Some courts take the position that the ADA applies to all commercial sites because the law was meant to protect disabled individuals from having a more difficult time than able-bodied individuals from doing business. That is why the website Scribd was unable to get a case summarily dismissed and ended up settling.