Which pricing innovation is credited with helping Spotify achieve mainstream success and changing the music industry's economic model?

The music industry has undergone massive transformation in the digital age. One of the most significant shifts came with innovative pricing models that revolutionized how consumers access music. This poll tests your knowledge of a critical pricing innovation that helped streaming services achieve mass market adoption and changed the industry's revenue model forever.

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The freemium model with ad-supported tier and premium subscription options
Per-song micropayment system with no monthly fees
Family plan sharing that allowed up to 10 accounts per subscription
Dynamic pricing based on song popularity and demand