A significant factor in the economics must be Local Authorities. Frankly, museums should be exempted from Rates of any description anyway, as they are non-profit/charities etc. Even when they are empty, buildings can attract vast demands from rapacious councils. I've seen many perfectly good buildings have had to be demolished because of this. It's complete and total insanity, especially when a large part of proceeds go to fund things that Councils should have bugger-all to do with in the first place.
