Ask Lavigne what role play his room in his sound quality experience and say to him that he throw his money out of the window with his room , all we need is the higher price tag and synergy between components ....
you don’t need a custom designed large room, but a good room is a prerequisite to ultimate performance. something that won’t hold you back.
then.......(1) having the room the right shape and size for the speaker, and (2) tweaking the room to a high degree........is where the code gets broken.
there are quite a few speakers that can be a part of an ultimate system. that just takes a check book. but then it’s up to the end user to chase perfection. it’s not for everyone. but dollars are not the main thing. gear lust will not be the end game. but nothing wrong with nice pretty things. modest systems can sound really great.
i did not have ultimate performance with lots of dollars invested until i figured out how to get the room to work right. so dollars do not equate to success. it can raise the ceiling, but not deliver the promise.