There are plenty of wonderful bottle conditioned European beers. Far better in fact than some of the swill available on tap. most of the smaller breweries in the UK do a range of lovely bottled beers - stouts, porters, ruby milds, IPAs, honey beers, winter ales etc etc. Very few pubs could stock such a wide range on tap.

Just out of interst (and I know I shouldn't) why do you think bottled beer is "wrong" for "folk venues"? Do you think they might encourage dressing up and using napkins? Sounds like Morris Dancing to me...