With NAPOLEON I'd imagine it is largely a rights issue among the assorted archives and so on. I can't imagine it is purely a matter of demand -- I think more people want to see NAPOLEON than want to see something like DIE NIBELUNGEN or J'ACCUSE, to name two big old silent classics that have gotten gorgeous home video releases.
I'd love for them to do NAPOLEON in NYC, but I'm sure the costs would be outrageous. This is the kind of thing where someone with serious Spielberg level money should do some shelling out for the good of the movie-going world.
"If they can get you asking the wrong questions, they don't have to worry about the answers." Thomas Pynchon, GRAVITY'S RAINBOW
"Reality is that which, when you stop believing in it, doesn't go away." Philip K. Dick
My blog: http://www.roscoewrites.blogspot.com/