Excellent pedigree, Brendy, but with the greatest respect not typical of the outlets in which many Catters perform- you've got a niche and obviously a profitable one. Those of us from Southern England don't have theme bars and diddly festivals to sustain us! People want the genuine article, rightly.
The market for English Folk music has not flourished in the same way for many reasons, among them being the willingness or otherwise of breweries to subsidise it. Of course it should be, but for many years it has been perceived as embarassing to sing English and at the sedate pace of the countryside. It's beginning to have its strengths recognised again, fortunately, and pride is allowable without all the usual suspects shouting it down. People like Keith Kendrick can make a living because they are good and are respected. However, I think many people gave up because simply the alternatives were better. Now there is a pool of good semipros coming back on the revival.