Yes, it definitely would be going pop or classical. Anyway some changes are needed at the big festivals:

They should gather together all the obviously foreign singers / groups and they should perform in a smaller tent, giving room in the main arenas etc for proper British folk music.

Then any of the British folk music with chords / foreign instruments should also be moved to these smaller venues, where there should be less facilities. Eventually we should pack all of them in trains and get them away from the festivals and 'forget' about them.