Which telescope product design innovation led to the largest retail market expansion in amateur astronomy during the 2010s?

The astronomy product market has undergone significant changes over the past decade, particularly in telescope design and retail strategies. Modern astronomy retailers have had to adapt to changing consumer preferences, technological innovations, and new market segments. This trivia question explores a pivotal product design shift that revolutionized the consumer telescope market and transformed retail experiences in astronomy shops worldwide.

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Computerized GoTo mounts with smartphone connectivity
Carbon fiber lightweight optical tubes
Built-in astrophotography cameras with auto-tracking
Inflatable and portable observatory domes