On Reddit there’s a 2008 audio interview with Steve Jobs, possibly for a Stanford student newspaper, about the recently opened App Store.
I didn’t feel like listening to all 45 minutes, but the beginning had interesting bits.
What strikes me is how TINY the App Store was at the time, only 1500 apps, and notably ~75% of them were upfront paid, not free.
I don’t think Jobs anticipated what the App Store would become in the future. For him it was just like iTunes.
https://www.reddit.com/r/apple/comments/1rilbts/rare_steve_jobs_interview_about_the_app_store_in/