The linked Spotify page says exactly the opposite.
> Because Apple Music doesn’t have to pay the 30% IAP charge, they are able to hugely undercut us and charge €9.99. To our fans, this just looked like we were ripping you off
(N.B.: I'm not defending the specific 30% cut that Apple takes or any of their other demands, just going "hmm" at the bit you've quoted.)
> 2014 June > So, we give IAP a try. That means we are now charged Apple's 30% tax and sadly have to increase our price for our fans... to €12.99 a month.
> 2015 June > Because Apple Music doesn’t have to pay the 30% IAP charge, they are able to hugely undercut us and charge €9.99. To our fans, this just looked like we were ripping you off
> 2016 May > We opt out of Apple's payment system and the artificially uncompetitive price we had to charge for using it
That's a very recent promotion (like, this week), and is the Hulu plan with ads [0], which has a marginal value of $0 or less in my opinion.