The room looks like an art gallery as others have commented. I can remember seeing displays of the catalogue for an exhibition in art galleries - a large array of a single book. The arithmetic implies some form of subsidy, and that room looks lovely. There is a street view here...

http://www.takram.com/projects/a-single-room-with-a-single-b...

...looks to be an exercise in branding/design.

I'm wondering if a community will form around the 50 or so titles stocked in a year. A book per week is a reasonable reading target for most educated people. If so, then a coffee shop model becomes possible: a coffee shop stocking one title per week and encouraging discussion while continuing to sell their coffee and food to pay the rent.