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Google admits Spotify pays no Play Store fees because of a secret deal | TechCrunch
(techcrunch.com)
This is a most excellent place for technology news and articles.
They don't do the same for ebooks with Kindle, which is why Amazon has removed the ability to buy them from the app. I'd be surprised if that was the reason for Spotify.
That got turned back on for me? Did they change it only for a few markets?