This article makes no sense. Duh, if Spotify goes away, if you leave for any reason (rates, terms of service, whatever)... their music goes with it. That's how subscription services work. If Netflix goes away, I lose access to the movies that Netflix was letting me stream. The fact that someone is used to "owning" their music or re-listening more than you usually re-watch movies doesn't change any of the core principles of the business model.
One album costs $10. If I listen to that album once a day for 30 days (not EVER going to happen, but I'm trying to be generous), then I'm still only filling a tiny, tiny fraction of the amount of time I listen to music.
$10 with Spotify gives me effectively non-stop new music. In 6 months, I'll have spent $60 and had the benefit of listening to hundreds of albums. Even if something happens that I stop using Spotify... are you really implying that I haven't extracted good value from Spotify as a service?
If Spotify's price increases that I don't think I can get the same or a good value.... I just stop using it and go back to life as it was before. What is the lock in? There seems to be an implication that I will have "wasted" my money on Spotify since I have no music mp3s to show for it. Did my family waste their money on Netflix despite the fact that I don't own any of the hundreds of DVDs that they've watched or streamed?
I just don't understand this implied malice at work here. Besides, it (seems) completely ignorant of Spotify's existence in the rest of the world for some time now.