Hi Anders,
at the beginning Qobuz was a download store for music files and you usually need to have a Qobuz login for purchasing and download albums. Of course you can playback your purchased files as you like. It is completely independent from any streaming subscription. As far as I know, you don’t need to have a streaming subscription to stream your bought content:
Excerpt from the Qobuz Homepage:
" How can I listen to albums that I purchased as paid downloads?
You can enjoy your paid downloads on Qobuz in several ways:
- on all the Qobuz applications (in the “Purchase” section), without having to download them beforehand.
- from the audio player of your choice (like Audirvana or Foobar), after having downloaded them."
The downloaded files are his property with the limitations of a license agreement (no reselling, no descent) of course.