I think the Macintosh proves that everyone can have a bitmapped display.
Not all smart people work at Sun Microsystems.
I got tired of people complaining that it was too hard to use UNIX because the editor was too complicated.
You can't prove anything about a program written in C or FØRTRAN. It's really just Peek and Poke with some syntactic sugar.
Well, limbo is not a good place to be.
That lack of programmability is probably what ultimately will doom vi. It can't extend its domain.