There is a vital point all of you seemed to have missed...
As of right now it is VERY hard to walk in to a coffee shop attatched to Amazon and sit down with your Mac, listen to Indie Rock and and sip on a grande-grande-double-shot-caramel-snobby-upper-middle-american-latte all while looking down upon everybody else in the room.
So until Amazon can find a way to attach a horrible coffee shop to themselves somehow... BN has a great advantage.