Race to the Bottom? Spotify Launches a 99-cent Premium Subscription Trial

Is there any question why per-user royalty payments are steadily declining at Spotify?
If you’re based in the US and haven’t previously signed up for its paid service, Spotify is now offering 3 months of its premium service for just 99 cents. 
The usual charge is $9.99 a month, so customers are being treated to a drastic 90% cut.  Similar to its previous offer, the regular rate returns after the three-month window.  Upgrading to Spotify’s premium tier