You might be right, I still don't see Spotify being cheaper for Spotify customers if Apple let Spotify users sign up through their iOS app. What's the customer

You might be right, I still don't see Spotify being cheaper for Spotify customers if Apple let Spotify users sign up through their iOS app. What's the customer impact? The inconvenience of switching to a web browser for a one time transaction? There are tons of other reasons this happens all the time in other situations.