My company worked with Borders, organizing book launches and story telling, over a period of many years.
I have to be the bad guy here, and say that Barnes & Nobles has always been easiest to work with. As customers, you don't see the bad side of Borders. One of the reasons they closed was apparent to us, along with their suppliers, long before the event.
Borders had terrible processes. The customers were never affected by this, but if you were a publisher or somehow working with them, they could reduce you to tears. Borders seldom paid on time, demanded a lot of things for free, and in some branches, had terrible management. At one point, one of their managers blatantly laughed off a payment that was late by some 20 days, saying that they were probably going to wait to get interest from the bank before paying out. He treated it like it was some kind of joke.
Their floor staff were great, but their bosses often left them in the dark. They'd come in and have no clue what events were going on, or even how to turn down the music for a story telling activity. On top of that, their low level management (supervisors) were often rude and not very knowledgeable. I'd seen Tactius' Annals of Ancient Rome crammed into the fiction section (not just one copy, but whole stacks), and comics sections that faced picture windows (which discolours them).
Don't get me wrong, I'm sorry to see *any* bookstore go. I think bookstores, and readers, are the last line of defence against the MTV idiocy that's assaulting us. But with the sort of processes Borders had...it was just a matter of time, and a real pain.