Why high-end cable manufacturers don't post measurements?

I’m not thumbing my nose at anyone. I’m a retired recording, electronic and software engineer.

The first thing an engineer does is get the requirements. I flew all over the world to have a look-see before making recommendations.

So when JoHiFi recommends his XYZ, without knowing anything about a room, the other components and user peccadillos, it just useless 0’s and 1’s.

Case in point: "The Naim series like the nd5xs2 is great at about 3500 ( I own one of these), and the Araulic Vega series, g1 is about 3500 I believe and I Just purchased their g2.1 which runs 6900.00. Both those are very easy to use also, which is important to me." So said speedbump6 in https://forum.audiogon.com/discussions/can-anyone-recommend-a-good-streamer-dac

To be fair, originators of "Can anyone recommend..." deserve the nonsense they receive. Most of these topics contain "I can spend..." and ZERO about music!!!!

Our audio acuity is much more complex than the current science can define.

It can be easily empirically and consistency proven that cables measuring the same usually sound different. Also, we don’t buy cables based on measurements, rather, we buy them for the change/uptick in sonic performance. For some, measurements may be a deciding factor to reject a cable, but for most it’s the performance that’s the main issue.

Like most/all of you, I don’t “like” paying for cables above the box store prices, but I realize that increased performance comes with increase prices, and the law of diminishing returns also play a major role.

Some folks look at the sum of cable parts to equate the retail cost, but reality doesn’t work this way. Supply and demand is what dictates the market. Besides, it’s the “performance” that really matters to your audio chain.

Some bemoan that some cables are expensive, compared to what? They’re leaving out a main consideration/ingredient: performance.
It’s the price/performance that really matters when we evaluate products.

Do cable manufacturers artificially jack up prices without a corresponding increase in performance? I’d say generally no. Even at elevated price levels, there is still a lot of market competition applying downward pressure in prices. Besides, even if you run into a manufacturer jacking up prices based on fluff, they would very quickly be revealed on forums and social media devastating their reputation and their business sales.

Also, many/most of the people purchasing so called expensive cables are highly educated and have lucrative professions. In addition to purchasing expensive gear, they also upgrade their cables to prevent/minimize audio performance bottlenecks. Just because they can afford expensive cables, doesn’t mean they have a bottomless pocketbook - they have to budget as well. These professionals aren’t easily fooled by marketing hype, rather, they scrutinized their purchases as we all do.

Can you get an expensive cable’s performance at a cheaper price? I wish, along with my pocketbook. For 4 years I’ve been researching audio cables trying to maximize bang/buck while minimizing the sacrificing of audio quality.

Is the price/performance worth it? It subjectively varies per individual, no one can speak for all. If it is yes, then the pocketbook pain is more than compensated by the uptick in audio performance and thus audio enjoyment- not the worst way to spend $.

Ieales, Kenny seems to understand something you do not. From your words it seems there’s a bit of envy over people being able to spend. I’m sure as many do, there will be denial, but your own words seem to tell a part of the story. Might not be the whole story of course. So again, you’re here to thumb your nose, there is no reason for this forum, or any of its kind, based on your assessment. So we should turn this into a discussion of checkers strategy maybe? Many of us here are intrested in dialog about products, each other’s opinions and suggestions. For the most part I’ll have to disagree with your views. Equipment can be adjusted in setup for a room, and the underlying sound of the product will still be there. Room treatments will make a difference in what and how well we hear it, along with some common sense as far as size and power, scales properly to room size, though there are ways to adjust for this somewhat, and also as always, boils down to personal preference. There is no way to listen to every possible combination of products in our own environments, so it takes some reading, determining what characteristics are most important to us, and some trial and error. The more “ opinions” we get, and ones that seem to confirm each other, the more reliable we can expect the results in our homes to be. I’ve also found that sometimes what I thought I wanted in a sound, was not what I really wanted. Also I know I like many different sounds, so no one sound will ever satisfy me completely. I’m sorry,  it I, and likely the majority of us, would have no interest in your idea that all opinions are worthless, and therefore by extending that type of logic, this forum should be disbanded. You’re always free to do as you personally wish of course, but I wouldn’t expect others to follow in your footsteps. Even the ones who disagree with me about cables and Tekton I don’t think would go so far as to say there is no room for opinions because they’re worthless. If you truly felt that way, I don’t believe you’d be on this forum at all. It’s a waste of time based on that idea.

"I can not imagine an airborne unit to be made and tested as a speaker cable."

Was this really sypposed to be comparable in any way?

"Belden make so many cables, of different AWG.
Which one is the one for me, for you or for some other?"

0, or even 00.