"Are we making progress and how close are we?"
I doubt it.
What you hear from a particular recording on your rig in your room is distinct in almost every way from what you hear at any particular live performance in a particular venue.
I question whether the absolute sound possible today is really that much better than what was achievable years ago. It is more readily available in more different configurations to more these days I would say and probably for significantly lower cost than prior if done right, so there has been progress in terms of delivering good sound to more, assuming one is interested in that.
I doubt it.
What you hear from a particular recording on your rig in your room is distinct in almost every way from what you hear at any particular live performance in a particular venue.
I question whether the absolute sound possible today is really that much better than what was achievable years ago. It is more readily available in more different configurations to more these days I would say and probably for significantly lower cost than prior if done right, so there has been progress in terms of delivering good sound to more, assuming one is interested in that.