Which product innovation strategy is credited with helping independent bookstores survive and thrive against e-commerce giants like Amazon?

Independent bookstores were once predicted to become extinct due to online retail giants and e-readers. Yet many have experienced remarkable revivals through product innovation and unique in-store experiences. This trivia question explores one of the most successful product innovation strategies that helped save independent bookstores in recent years. Test your knowledge about how literature retailers have reinvented themselves in the digital age!

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Implementing subscription box services featuring curated local author selections
Creating exclusive 'store-specific' cover editions unavailable online or at chains
Offering in-store print-on-demand services for out-of-print classics
Developing proprietary e-reader devices that sync with physical book purchases