"You mean classical music programmes should include Bert Kamfert?"

That is comparing apples and oranges. Classical has a diverse body of work and a much larger audience compared to folk music you are describing. Bert Kamfert has not led to the loss of any of the masterworks of classical music, and Kamfert did give us "Strangers in the Night" and other songs that people love.

Your model for radio is much different than ours, and if it can sustain as many programs as you claim, then consider yourself very lucky. I truly wish that would work in this country, but it has been shown to limit the audience and lead to elimination of that type of program. Audience here tend to appreciate quality and pay less attention to the pedigree.

I don't think anyone is suggesting "watering down the whiskey", although it is well known that adding water can unlock many flavors in whiskey that were previously unseen by those who drink it neat - but there seems to be a sort of stigma attached to the practice. It is a shame that others dictate how people should enjoy their drink.