@hawkeye10,
In Oz, as best I understand, it's a combination of the "traditional" Borders & Angus & Robertson, a local company.
In any case, I am very sorry to see them go under like this.
I've been a regular customer at my closest Borders (Carlton, Melbourne inner city) & it's a terrific (huge!) book retailer.
My guess is that there's simply a lot less money to go around for luxuries like books in these tough times. For many, many people.
I never thought I'd ever have to curtail my own very established book buying habits, but I haven't had any choice in the matter.
Books are a lot more expensive in Oz than they are in the US.
I think, also, online buying from Amazon, etc, where considerably cheaper books are available, has heavily impacted on local booksellers, including Borders.