The parent company for Barnes n Noble closed and sold off its Borders Book Store subsidiary (including Waldenbooks and B. Dalton book stores - largely in malls) but the main company is not closing yet as far as i can find. If the one in your area is closing its because it didnt make enough money. Most book stores are suffering a lot because of the vast increase of e-book sales and decrease in paper book sales.
Barnes and Nobles are the victims of change. Just like the buggy whip manufactures went to the wayside. Print material is going to the recycle bin of life and putting hard cover material out of existence. Why do you think B&N are pushing digital books and devices so hard? They see the handwriting on the wall and know their business model is going the way of the dinosaur. The same fate is looming for libraries, newspapers and magazines. In ten years most of our material will only be available electronically.