Which retail innovation dramatically transformed the consumer telescope market in the 2010s?

The astronomy industry has seen remarkable product innovations in recent years, making stargazing more accessible to amateur astronomers and casual observers alike. Major retailers have transformed how astronomy equipment is marketed and sold to consumers. Test your knowledge about the retail side of the astronomy industry with this challenging question!

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Automated star-tracking technology that allowed consumer telescopes to automatically locate and follow celestial objects
Subscription-based telescope rental services with monthly delivery of different models to try
AR mobile apps that replaced physical telescopes entirely for casual astronomy enthusiasts
Direct-to-consumer telescope sales that eliminated specialty astronomy shops