Traditions, musical, and otherwise, are shared experiences, and shared experiences are what defines community.   The critical discussion here is really, "What can we do to restore and sustain our musical traditions?".

Nothing. The experiences are still being shared, only via different media. As long as there are human beings there will be community, as long as there is community there will be musical traditions. That much, I think, is pretty self-evident. The critical discussion here ought to be one of seeing musical tradition as being integral to musical experience without exception.

I share meaningful musical experience collaborating with people in Italy & Japan who I've never met face to face. This is my community - this is my tradition.