Why do Classical CDs sound less Alive/Real/Present ?

Of course GIGO always applies but some of my CDs are on decent labels.
When I listen to symphony recordings as an example, the sound loses its presence
and sounds a bit like I am using a much lesser grade of equipment.

My system has all components in excellent shape as well as a good amount
of acoustic treatments. The room is not large at 16 x 14 x 8 + adjacent open kitchen
behind seating of 10 x 13,  so I am wondering if what I hear is just the nature of the
beast-ie. a lot of instruments going on at one time?

I seem to recall this has always been the case in other settings as well.

What say ye?