"Modernise or die", whether explicitly spelled out or not, is an underlying thought that drives a lot of discussion about folk music. There is also the opposing thought, "keep it like it is, it might come in handy some day" which might in some circumstances have as much if not more validity.
    Climate change, peak oil etc, may make it a fact that in some senses society is going over a hump and now has to go down the other side. In which case it might just be that people who have carefully preserved the knowledge of how to build wooden boats,how to sail them or pull them along canals, how to do horse-ploughing,how to farm organically, how to keep warm by burning wood,how to keep warm by wearing sweaters, how to use hydro-power and wind-power of various kinds, how to play lively dance music acoustically with instruments made out of bits of wood and wire : well, you see where the thought is going, it is not totally impossible that this stuff may come back into fashion.