Which subscription-based service model created the biggest revenue breakthrough for astronomy equipment retailers between 2015-2022?

The astronomy industry has evolved from simply selling telescopes to offering sophisticated subscription services that have revolutionized how both amateur and professional astronomers access the night sky. This trivia question explores the innovative subscription model that transformed astronomical data accessibility in the past decade, creating a multi-billion dollar segment of the astronomy product market.

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Cloud-based observatory time rental services allowing users to control remote telescopes on a pay-per-hour basis
Monthly celestial event boxes delivering themed astronomy equipment tailored to upcoming astronomical phenomena
Telescope lens upgrade programs offering quarterly replacements based on seasonal viewing conditions
Astronomy software subscription packages with exclusive star chart updates and planetary tracking algorithms