Perhaps a few other questions might have been -

Are the numbers at the clubs you go to dwindling?
If so is that because people are being driven away by the poor quality or because they are growing old and dying?

Are the folk clubs you go to dominated by out of tune singers singing Beatles songs out of notebooks accompanied by out of tune guitars despite the fact that they have spent ten minutes tuning them?
If so, why do you keep going there?

Why don't you try running a folk club yourself so you could set ypur own standards?