> Do you seriously believe that improving accessibility would have a higher impact in Linux adoption than improving robustness and hardware compatibility ?

Yes, absolutely. Linux is plenty robust and has lots of hardware that you can use today. The reasons people end up not using it are:

- Microsoft

- Lack of favorite application 'x' (see: Microsoft)

- Difficult to use (unfamiliarity plays a role here)

So yes, accessibility is a key factor, and not just for the people that have challenging bodies.