I agree with B&N. And I know that this was part of Steve Riggio's reluctance to add wifi to the B&N stores. (I talked to him about it.)
I also agree that the selection could be better at many bookstores. But that's precisely my point: if you are forced to shop online because of the poor brick and mortar selection, that's where you should buy. But there are a lot of people who spend time in local bookstores looking at books, and then, adding insult to injury, tell the bookseller they plan to buy online for a better price.