The legacy 1960's clubs will be gone, because the legacy folkies (like me) will be in their eighties.
Today's acoustic musicians will be sitting in declining Acoustic Nights in scruffy back rooms of whatever pubs remain unconverted into virtual 24 hour gambling porn boozers, moaning on about the good old days of proper folk singers like Seth and Jim and Bellowhead, and still trying to find Bminor7 in DADGAD.
Meanwhile the real folk will be happening somewhere else, where young people will be playing old songs and having a good time.
That's how it always has been, and that's how it will be.
Cheers
Dave