What critical product strategy mistake is widely considered to have accelerated Borders Bookstore's decline and eventual bankruptcy in 2011?

In the constantly evolving retail landscape, some brands that once seemed invincible have disappeared entirely. Understanding these historical retail failures provides valuable insights for modern product managers and retailers. This poll tests your knowledge about one of the most significant retail collapses of the early 21st century - Borders Bookstore, which filed for bankruptcy in 2011 after 40 years in business.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Outsourcing their online book sales to Amazon in 2001, missing the e-commerce revolution
Expanding too rapidly into international markets while neglecting their core US customer base
Focusing exclusively on physical books and refusing to stock any multimedia products
Eliminating their loyalty rewards program to reduce operational costs