Esquire's Elizabeth Gunnison wrote a speculative piece about cafés in Apple Stores. In short, she thinks it's a great idea. In her piece she writes:
Think about it: Apple's retail stores are purpose-built for sucking people in and holding them hostage for hours, what with the rows and rows of shiny new devices, the Genius Bar, and their own roster of educational seminars. Why not add a café? Food and beverage margins are n