What we have to keep in mind that there is a HUGE difference between an orchestra playing live in a hall and a recording of the same piece of music.
Look at it that way: Listening to the live orchestra is like attending a theatrical perfomance. Listening to a recording is like watching a movie. Film and theatre have convergences, but I hope that we all agree that they are _not_ the same art form. Not many people would watch a movie which has been made with only one single camera shot, from one single perspective without changing angles, without additional light, without color correction, without edits, and so on. For many genres it is common to use CGI. ... I think you get the point.
The same is true for recorded music, no matter whether it was played live or created virtually. Most of the time, a "pure" recording is actually quite boring. We have to create points of interest for the ear which wouldn't appear in the "real world". Artificial changes in the acoustic "perspective", the "colors", the "lighting", and so on.
Sometimes a simple rebalancing is all that's needed. But more often than not, we have to recourse to additional methods and tools, like edits, EQs, filters, dynamic processing, articficial reverb, modulation, synthetic sound sources, ... Compression is just one of them. I wouldn't say that you can't make a good recording without it, but I wouldn't hesitate a second to use it whenever I get the feeling that the result will benefit from it.
Kind regards,