Well no, Apple's even admit that Spotify didn't get their subscriptions through them:
"only a tiny fraction of their subscriptions fall under Apple’s revenue-sharing model"
That means that only a fraction of iOS user bought Spotify subscription through App Store. It doesn’t mean that many iOS users are not paid subscribers.
Well no, Apple's even admit that Spotify didn't get their subscriptions through them: "only a tiny fraction of their subscriptions fall under Apple’s revenue-sharing model"