Except that is not true, they decieded to get their coffee at Starbucks. The Starbucks product isn't coffee its "coffee distribution", Just like Spotifys product is "music distribution". Both Starbucks and Spotify provide a distribution channel to attract users, now this doesn't mean reasonable quality coffee/music isn't important to them, but thats not the whole story.
So both are just like McDonalds IMHO, not different as you suggested, its just that their value adds are different.