Speaking as someone familiar with record companies, usually the master used for the cd is also supplied to the streamers. Some services, like Qobuz, request a higher bit rate file, in that case often the lp master is used, if a 24 bit lp master was indeed made. Apple is now asking for records to also be delivered in Spatial Audio where a separate master is made from what are called stems. )This can sound pretty cool or like a dogs breakfast.)
Where does music come from that streams?
If I was creating my own streaming company, would I reproduce songs from a CD or from a record? So when I listen to my streaming source, qobuz, where do they get the music I listen to? Does the music come from master tapes? Well that would seem to be a pretty good place to get it
Sometimes I wonder, a particular song on qobuz doesn’t sound very good and I know I’ve heard it better in the past. And most stuff sounds pretty good and comparable to other sources.