I'm pretty sure there are false dichotomies going on here. Software products may be developed for a mass audience or they may be developed for a narrow niche.

I'm pretty sure there are false dichotomies going on here. Software products may be developed for a mass audience or they may be developed for a narrow niche. In either case, making the product accessible to people with disabilities is something developers should try to do. And in every case, having data on user behaviour, software performance, bugs, crashes, etc, will enable the developer to do a better job of catering to their users' needs. Have I missed something about how these objectives must be mutually exclusive?