Accessability is the issue, gamers have the gear and the motivation to do
what you are describing. Artists who want to assist communities to put their
stories online have to deal with a level of expertise that isn't going to
overwhelm them or their clients. Maybe we'll see interactive movies that
deal with community issues using perhaps tools like the korsakow-system,
http://www.korsakow.com/syndrom/start.html
But the important thing is accessibility by the makers of the material and
their audience. Online gaming is an interesting model for this and some
artists have used gaming engines for their own works; Leon Cmielewski and
Josephine Starrs. I remember a group of gamers in a virtual world who
organised a virtual march on some virtual landmark to protest the closing
down of the gaming system, they won, the system stayed up.
Telling stories, about your community, your history, traditions and tribal
myths in the setting of virtual game tech could be very compelling. Is it
happening now though, certainly Flash has proved a potent way to get
interactive story telling working.