Do any of these interest you at all? (If you had the money)(Which I don't)

"Most of his list would appeal to the same people who buy Yellow sports cars. To be seen."

Some people just like yellow color. I have no idea about who and why buy these speakers, though.

At RMAF 2018 I heard the smaller version of the Kryon audios in that link. They were my favorite of the entire show.. when I win the lottery Kryon Audio kit is on my list!! A truly magical design philosophy 

Elizabeth you are spot on the MBL ,they are  not only very expensive 
but my favorite speakers if I had the space and the cash to buy them.

MBL if I ever hit the lottery. $500,000 home, $250,000 MBL set-up, $350,000 Porsche GTRS (no stereo needed).

Several of them look like a comb filtering nightmare of poor driver layout.  Maybe I am just too practical, but what do they really offer over a top of the line Revels, Sound Labs, Vandersteens or Magnepans?  The only reason most of them seem to exist is to be able to say you spent XXXXX on them.