Do they finally offer mainly DRM-free music? I think I saw at least some mp3 offers from Amazon, but haven't looked closer at music streaming for a long time, since other sources are numerous.

For music it is one of my expectations. I have strange and sometimes old devices for playback. Not really interested in locked down content here.

Itunes for example is DRM free.

That is actually quite nice. Apple does good things from time to time, I just don't like their devices. But I think there are ways to access iTunes without an Apple device.

You can use iTunes purchase from the iTunes store on Windows.

And, as of very recently, there is an Apple Music web-app (https://beta.music.apple.com).

But Apple Music is streaming-only with DRM, not DRM-free downloads.

When you purchase a song from iTunes, it is DRM-free. When you download it through Apple Music, it is not.