I understand your pain over this, but it does seem to be only a natural extension of the Costa coffee shops that are already taking up bookshelf space in Waterstones. They obviously are successful in getting people to buy more books otherwise they would have stopped rolling them out to more shops. Unless I'm missing something?
For SFF fans, how about a bookshop that was also a Cosplay bar?
It could be modeled on a fictional bar such as Quark's in DS9 or Mos Eisley or the Mended Drum in Ankh-Morpork, or maybe have more than one? No tourists allowed! You can't only enter past the Vogon Guards if you are properly dressed (maybe you can loan something) - and leave the Bat'leth and Blasters at the door please.
I've been to the touring Star Trek Experience when it was in Hyde Park and to Harry Potter World in Leavesden, Watford. Both had/have bars/restaurants that made serious money, but didn't have people dressed the part.
On the otherhand, maybe books and drinks don't mix. I'd see a problem with stock getting damaged. Also, what next - they'll be playing Pokemon Go in libraries. Oh! They already are!