I think the challenge for many of us is the space, the ones in DDKs rooms seem H-U-G-E beyond belief. As much as I would love to contemplate such a system...the big Wilsons have a 16" x 24" footprint and can sometimes work well tucked back (a bit) in corners. Thus, while the SOTA stuff like Arrakis, 4-tower Pendragons might be way more expensive, the question is are they producing something still-pretty-phenomenal while also being able to be more practical in many people's homes where, despite the insane cost of hifi, the real estate can sometimes cost way more (or it seriously impractical to move or build).
it is in this regard that i give a lot of credit to designers like David Wilson who have managed to create a speaker that reproduces much of music very well, while remaining within a cubic area that fits in a lot more homes/spaces (not to mention its adjustability to those many homes/spaces).