I wonder how you folks respond to expensive cars and expensive home.
Great question. Here's how I respond: If we're talking about things in the market segment of upper middle-class to somewhat wealthy buyers, a house that costs 2X as much as another house will indeed have better fit and finish, and likely will have additional living space and amenities. It might also have better build quality, but this is far from guaranteed.
So in a 2X as expensive home, I would expect to feel more comfortable because the house would be better insulated temperature and sound-wise. I would also expect to have a more efficient HVAC system, lowering my utility bills and contributing to enhanced comfort. And it's possible I would get a better view or a better location or better landscaping in the yard. Depending on where and what type of house it was, I might also get smart lighting, or perhaps a pool, or maybe more parking capacity. In many parts of the United States, I would be likely to also get a location with a better school district.
If I were also looking for high design - as opposed to architectural charm, which even a modestly price house can have - then I would expect the 2X as expensive home to have a more fully executed aesthetic design, owing to the higher budget for exterior cladding (the biggest single line item on any new home, except possibly for the foundation).
Most of these things would contribute to my basic physical comfort on an everyday basis, at all times of the day or night, no matter what I was doing. If I had school-age kids, a location near better schools would also be a tangible benefit to my family's life.
The aesthetic design aspect would indeed be more of a luxury, something not directly related to my physical comfort - but this is also more optional and less of a reliable benefit, as an old or inexpensive home can be very aesthetically pleasing so long as you are not looking for a very particular kind of high-architecture/modern aesthetic.
Features like a pool or 3-car parking or a huge yard are just that - features. I might or might not want them. If I wanted those features I would of course pay for them if I were able to afford them. But if I didn't want them or didn't care much about them, their presence would not make me think that
other aspects of the house were magically better than the cheaper house. Double-paned windows are double-paned windows regardless of whether or not you have a backyard pool.
With the Stereophile list, by contrast, I'm being asked to consider DACs that are 10-15X as expensive than cheaper DACs and perform the same - or worse on their core functionality; might or might not have better user interfaces and feature selections; are no more power efficient; will not last anywhere near 10-15x as long (and might not last any longer given how little there is in a DAC that can break); and might or might not be more visually appealing to me than something like a Topping D90.
So that's how I respond. I think the better analogy is jewelry. A $15,000 DAC vs a $400 DAC is like a large diamond vs a large cubic zirconia: You pay tons and tons more money for the former because it's an ornament that might (
might) look slightly better in the right lighting, and more importantly because the former has a certain status (and lends that status to yourself), which you enjoy.
Finally, I probably shouldn't even say this because it seems obvious to me that you are intentionally trying to make a provocative argument that you don't even fully believe yourself, but your claim that build quality is
more important than sound quality is nonsense. Build quality is important only if it (a) directly contributes to superior sound quality, or (b) gives the unit superior physical and electrical durability so that you can enjoy its excellent sound quality for a very long period of time.
But if the device's sound quality is inferior to another product to begin with, then build quality is irrelevant, because the build quality is not contributing to superior sound quality (or at least is not able to overcome the unit's sound-quality design flaws), and it's of no interest to have an especially long-lasting unit if you don't want the unit in the first place because its sound quality is not up to your standards.
Of course we all have certain aesthetic preferences, brand preferences, and build quality standards that we prefer. That's subjective, and that's fine. But paying an extra $14,000 for perceived build quality
and sacrificing some sonic performance in the bargain - that's something you are free to do for yourself as you please, but as a position you want to claim others should adopt, it's completely and utterly indefensible. And you know it.