Tbh I can live with what I’ve got at home. A garden variety setup today still sounds better than something high-end did when I was growing up. Just give me some decent channel separation and I can zone out.
Where there is still significant room for improvement is in stage sound. Why do monitors always have to sound like sh*t? It’s like bands spend all their budget on amps and PAs and whatever dregs are left over go to the monitors. And house sound. Don’t even get me started. Maybe their gear was good once (probably not) but it’s invariably seen one beer spill too many.