Which retail technology innovation by Netflix in 2006-2007 dealt a devastating blow to traditional video rental stores like Blockbuster?

In the world of film distribution, technology has dramatically transformed how movies reach audiences. One particular retail technology innovation fundamentally changed the movie rental business in the 2000s, disrupting established players and paving the way for today's streaming services. This trivia question explores a pivotal moment in film retail history that reshaped consumer access to entertainment content.

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DVD-by-mail subscription service with no late fees
Introduction of Blu-ray disc rentals
Self-service rental kiosks in grocery stores
Pay-per-view movie downloads