Following are 3 basic approaches to the PwD (People with Disabilities) market.

Customised solutions narrowly targeted to specific PwD types
Companies using this approach are usually smaller, have dedicated product development efforts and use resellers that focus on the PwD market. Assistive technology is their core business that might limit opportunities to the larger market but allows them to achieve their organizational goal of innovating for the PwD market.

Mass-market solutions positioned with side benefits to PwD
Companies using this approach are usually larger, leverage existing features, tweak messaging and use mass-market channels to appeal to disabled individuals and their family and support network. They do not create products for PwD; rather, they embed accessibility features into their products.

Line extensions with redesigned products for PwD
This is a hybrid approach where a mass-market product is modified to PwD, says Gartner. While the approaches to accessibility may be varied, the trend toward IT consumption patterns that place users at the centre will continue to drive consumer and enterprise IT requirements for the foreseeable future. With the trend toward more human-centric design, accessibility and overall usability for the largest percentage will become more important.

Source: Gartner