In opinion both CD and streaming are digital format what it mean they don't produce excellent sound quality in my ears compared to analog vinyl. I learned the expensive hard way by doing lots of buying and testing equipment from high to low end gears specially with DAC's one to get the right matching sound with tubes amps. Once I got the right DAC, I was able to appreciate both devices but I would prefer streaming since I can choose right genre of music in my right mood of listening.
CD v Streamed
Uncompressed CD audio will take about 10.6mb per minute to play, to stream that takes big space and dollars to stream an album, see what your streaming company’s takes mb per minute to stream, find out and post up here.
I hear CD’s are better, I get better dynamic range from CD every time it’s A/B to me, now that could be that the streaming companies are using the "later compressed re-issues" of the same albums, you can find that out here https://dr.loudness-war.info/
Or that the streaming process itself compresses the music to save "streaming size" to save big dollars even if in small amounts.
Here’s a video from the CEO of Disc Makers Pty Ltd, yes he probably also biased because he manufacturers CD’s and vinyl, and is a very bad dancer.
https://youtu.be/YHMCTUl2FQo?t=1
Cheers George