The idea of DRM winning or losing is a bit too black and white here.
I'm not against DRM; I'm against *bad* DRM. You've probably seen one of the images showing the difference between watching a pirated movie and watching a paid DVD/blu-ray, showing that the pirated viewing experience is far better. Similarly, most early attempts at DRM resulted in a far worse media/game consumption experience for paying customers. That's what I'm against, and when that proliferates with complete acceptance I will consider the war lost.
Services like Spotify, Steam and Netflix get it right, though. Yes, they use DRM, but they found a balance where the paid, rights-restricted solution is actually more convenient than the pirated solution. Most common use cases are easy, and I'm happy to pay. In my opinion, when the legal option becomes nice enough to use it doesn't matter if it includes DRM, and I don't blame content distributors for doing so.
The issue of DRM is really pretty different from the issue of rent versus own, though. If you rent a digital item it necessarily has DRM, but DRM isn't the issue there.