Many in the comments section have noted that aside from offering books, Borders and their cafes often served as meeting places for young pagans. In my mind, that is where the real impact will be felt in the community, as Borders offered a place to meet with decent hours, which was large enough to not care who was meeting there, unlike some smaller, locally owned coffee shops that may not appreciate having witches congregate there. (I once did a tarot reading at a coffee shop than I didn’t know was owned by Fundamentalist Christians. This was not a fruitful event.)
I think that the analysis does point out why acquiring occult books shouldn’t be too horrible difficult, what with Amazon and e-books and whatnot. (Don’t underestimate the e-books! Pagans are notorious for being pretentious about their old-school book collections and the aesthetic of paper books, but e-books can have their advantages!)
I admit, though, that I am rather old-school in this regard, and if I buy a book I want to hold it, smell it, and flip through the pages. I never had the experience of getting a book from an online vendor, and all of my early occult books were acquired nervously from Borders without my parents being able to find out.