You pay for a streaming service, you don't pay for specific songs or artists. I have been using Spotify since 2011 and have never once had an issue with music

You pay for a streaming service, you don't pay for specific songs or artists. I have been using Spotify since 2011 and have never once had an issue with music being deleted from Spotify or my device. Perhaps I'm missing something here but it's not really an issue. You are at the mercy of the cloud, but for great benefit over having to purchase each individual track for $1.99 from iTunes. Where you could argue that you had a level of "ownership" over the track because you could export it anywhere. What is your alternative?