I think the argument is that everything likes to be cleaned up, but an amp likes to be plugged directly into something huge even more, to sound huge.
The theoretical best place to set up a stereo should probably be in a dedicated room with a bank of outlets AT a nuclear power plant. You’ll probably want it to be your own personal power plant, too, so that you don’t have to feed anything besides your own personal stereo with it.
Now that we can have silent battery operated cars, do they have enough juice to start equipping with standard power outlets? Hmm, vision requirements will still make it difficult to make an automobile the right place to set up speakers. But if they’re from lower, or you’re ok with letting them be on the ceiling... Hmm, there won’t even be a sweet spot in a car, too cramped. But still, after it’s silent, and your battery gets big enough...
The government will be right not to allow personal nuclear reactors, but there should be no reason you can’t have your own personal any other type of power plant. Just keep working on getting rich, someone will probably eventually make speakers that cost more than a nuclear reactor, anyhow. I’d like to see a supercar that’s actually a sound isolated cube van, designed to be a mobile listening room. That would be very affordable, too, really. A supercar (or custom sound isolated electric cube van) is around 1 million, and the best stereo setup so far is probably less than 2 million. You could make it to that easily, by only being a single billionaire... By then, you’ll probably have a 2nd identical version of your home reference system in your $40 million personal jet, and be complaining about the background noise of the engines in it. No, with jet engines, you'll probably want to pay someone to design and make you an uber pair of closed-back headphones, which, outside of the Orpheus and that $40k Sennheiser set with the marble amp and dac included, have only reached $6k so far. And those Senn's are open-back, anyhow, so no good for jet engine travel. They may all be open-back, at 6k, so far, anyhow. I guess people will always be arguing that open backs will sound bigger and less reflective, so too bad for jet engine people. Nah, the IEM people always want to argue that that presentation can be given with great care, someone will come along with $900k IEM's, eventually.