Where does this madness end??
It simply ends when people stop buying these. A person may have a $3000 amp connected to $10,000 cables if its cables that excite him. Rather than get better speakers, better amps, or God forbid, do something that really makes a difference like driving speakers directly with mutlitple amps via an eletronic crossover its all like putting lipstick on a pig.
In the 1950s and 60s people built kits, made an effort to understand and be able to repair their own equipment. We are so far from that level of participation and knowledge. Evidently reviews, wildly expensive cables (fuses, power cords etc) delight people whose systems might sound a lot better with more knowedge than money.
To those who have the funds to throw around, these cables must bring some satisfaction.
To parapharse Marshall McLuhan, "in the future the satisfaction of buying something will be entirely in the desire to want it, purchase it, one will go through the process of buying it but not need to have it. The product will simply be an idea sitting in the back of a file cabinet"
With cables, fuses and other such things the satisfaction is mostly in talking about it. As we see in forums everywhere. The purveyors of these devices are as slippery as snake oil. They have no knowedge of what they do. I know because I have spoken to them.
https://www.marshallmcluhan.com/