According to WHO
[https://www.who.int/news-room/fact-sheets/detail/disability-and-health#:~:text=Over%201%20billion%20people%20are,often%20requiring%20health%20care%20services.]
, there are 1 billion people with disabilities. That roughly translates to 15%
of the global population.
Now, unless you plan on ignoring this massive number of potential users