The roots of the musical traditions that we love is in people making music for its own sake, and getting the odd gig at weddings and community celebrations. And it's still that way for most of us.
So what we need to do is to support each other, by swapping our skills and knowledge, in operations like "LETS" schemes. (You know, you get a credit for mowing a lawn, someone else gets a credit for singig a song or mending a hoover and so forth. ) And have lots of celebrations where you hire the local musicians instead of getting some band of srtrangers for weddings and such like.
The best we can hope for on a consistant basis from outside the "folk community" is to have some useful facilities laid on free or subsidised, in the way public libraries are, including archives and collections etc. That should include some recording facilities, and some maintained venues. And some travelling bursaries woukld be handy as well. and the right place to get that is from local government, and from voluntary community like churches of various sorts.
Outside of that there a music business, some of it growing out of the folk scene, and that can look for sponsorship from firms and trusts and that to underpin festivals - but that's really a separate operation.In one way it's much stronger and wealthier - but in another it's much more vulnerable to changes in fashion.
Whereas, so long as anyone wants to play or sing for it's own sake, there no way it can die out. And if it did, it'd be born again, and there'd be young people pestering any of us still alive at 90 years old. Making up songs and kidding them they were traditional. The same way old folk have always done. (The trick being that when you make up a song and let on it's traditional, sooner or later you find out it was anyway....