"Widening" the audience for a static quantity/music is. .. what...silly? Impossible? Evil? Whatever else it is, it doesn't strike me as being a particularly healthy pursuit.
Now, evolving the audience as the music itself evolves, yeah, that's healthy. And it seems to be happening now more than it has for a good while. And the fact that I like only some of it is a good thing, if for no other reason than I'll be dead before the nostalgia for it comes around, so don't look at me to buy all those reissued mp3s, even of the stuff I DO like!!!