Well here are the words you wrote Dick.

moreover most festivals[in the UK] take place,in complete isolation and do not involve the local community at all

Dick it just isn't true. Most folk festivals do involve their local community for the reasons I have already pointed out. It is often in the form of reduced price admission; they involve them as stewards; they involve them in things like community choirs; and they involve them through local schoolchildren for which they can get grants. Two festivals I can think of do ALL of those things. The local community supports the festival with small scale sponsorship. Locals come to dances, watch street activities and enjoy sessions - mostly.
Some towns rely on festivals for tourist income - or does that not count as local? Some schools do well out of holding a festival on their grounds or does that not count as local? Try taking away Shepley Spring Festival from the local cricket club and see how far you get!

They are not "community festivals". Of course they aren't it is a different sort of festival.

Where I live there isn't a Walkley Folk Festival (though there is a community festival) so of course I have to travel. Same applies to most people. If people did not travel to folk festivals then the artists would not need to travel either. Is that what you are advocating?

Rant over.