It's not a coincidence that Borders, Waldenbooks, Books-A-Million and Barnes & Noble all got, essentially, decimated in the same era that saw the rise of Amazon and its Kindle.
Waldenbooks had been around since 1933. Books-A-Million dates to 1917. Borders to 1971. Barnes & Noble has been around in some form for ~150 years.
It wasn't overexpansion and debt that destroyed them all (yes, some are still standing in a straggling-on-zombie sort of way).
AFAIU Borders succumbed more to overexpansion and debt than legacy-protection.
See:
https://www.npr.org/2011/07/19/138514209/why-borders-failed-...
http://business.time.com/2011/07/19/5-reasons-borders-went-o...