Did you notice....

In some cases people have their systems tuned to deal with all the issues associated with analog so when pure clean accurate digital comes into the picture it is a problem that requires more changes.

In other cases the reverse is true.

In others, nothing is really all that good so there is no source for reference

Still yet in others the stars are aligned and everything sounds similarly excellent. But this usually happens by design, not by chance.

Just do it well no matter what and it will all work out.  Otherwise probably not. 

Are you comparing the exact same cd ripped properly to cd resolution with the original CD? With same DAC? That’s the apples/apples test. If you are comparing music on a streaming service to actual CDs there are many reasons it may sound different. For one thing, Streaming services tend to lean towards newer remastered releases that may not be the same as older CDs. Lots of other processing can come into play that results in a different sound. There is nothing inherently wrong with streaming technology if that is what is being inferred. Rather, streaming sound quality can vary widely for many reasons. Whereas CDs are CDs. Either done right/well should sound top notch.