According to Steve Jobs “Thoughts on Music” essay posted in 2007, only 3% of music on the typical iPod was bought on iTunes. This was original posted on Apple’s home page. So it wasn’t the music store that made that much difference.
https://macdailynews.com/2007/02/06/apple_ceo_steve_jobs_pos...
Through the end of 2006, customers purchased a total of 90 million iPods and 2 billion songs from the iTunes store. On average, that’s 22 songs purchased from the iTunes store for each iPod ever sold.
Today’s most popular iPod holds 1000 songs, and research tells us that the average iPod is nearly full. This means that only 22 out of 1000 songs, or under 3% of the music on the average iPod, is purchased from the iTunes store and protected with a DRM.
