Bob Ludwig found value in these for his mixing room. I was fortunate enough to get a demo of those beautiful Eggletsonworks masterpieces, the Ive Signature SE. I have no idea what cables were used but Bob felt they offered a significant improvement for him. I used to listen to Dave Ramsay a lot when traveling for work. He would often talk about one of his billionaire friends. He said the guy bought a $300,000 car and that it was like a regular guy buying a biscuit. I did the math and it's true. I don't think Bob is a billionaire but sound is his life so I can see spending 100s of 1000s of $$ to make my passion, my hobby, my livelihood better.
I think some cables are just a little too expensive.
A while back a shop I did business with carried Transparent Audio Cables. They were so expensive it was obscene. They did sound good, but you had to move up from the bottom to the more idiotically pricey models to start to feel the magic. It had been several years ago and I wanted to check in on my old friends at Transparent Audio. This is their top of the line speaker cable. Now if you don't have a problem with this whole cable thing, this might push you over the edge. I can't imagine a speaker that would need such a cable. Wilson? Rockport? What amp? You can buy a nice luxury vehicle for the same price as a pair of speaker cables? Nelson Pass would be embarrassed to see these monstrosities on one of his amplifiers.
https://www.transparentcable.com/collections/magnum-opus/products/magnum-opus-speaker-cable
https://www.transparentcable.com/collections/magnum-opus/products/magnum-opus-speaker-cable