I believe the masters I hear when listening to Qobuz are equal to or superior to the old CD copies I have in my library. I consider Qobuz an increase in fidelity over my old rips (in most cases).
There are plenty of CDs with a way better DR then what is currently on qobuz.
Not to mention different versions of tracks.
The David Bowie stuff released in the 80s on RCA and Ryoku CDs is not the same music that is currently on Streaming services.
And even as someone that has Qobuz and Tidal there is plenty of stuff that I'm not able to stream or buy digital online.
So I went back to importing and ripping CDs.
It all depends to what you listen and if you care for different versions of tracks but streaming services currently are not a replacement yet.