That can probably be said about a great many things. My own feel is that if performers can find a market niche, more power to them. Irish folk and trad has survived without the wide world knowing much about either. They both experienced a sort of rebirth born from the American folk revival after WW II. The wave will eventually fade, and both will return to a less visable stasis. But think of the millions of folk who would never had heard of it were it not for the commercial wave.