Your concern about tailored user interfaces also applies to disabled people who physically can't do things the same way as the rest of the group, e.g. blind peo

Your concern about tailored user interfaces also applies to disabled people who physically can't do things the same way as the rest of the group, e.g. blind people who need to use a screen reader and keyboard commands rather than look at the screen and use a pointing device. Having said that, some implementations of collaboration don't have this problem. In most modern networked applications that are designed to be multi-user, each client runs its own instance of the UI, and the clients synchronize the underlying data. This scheme can accommodate different user needs much better than, say, using something like VNC to have a bunch of people watch a shared frame buffer and take turns sending input to a shared UI.