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

"You think convient over right. this is the way most losers think."

Tell that to losers at Bose or Bluetooth SIG.

Also, convenient is not necessarily wrong.

What's the deal with this goofball and car battery cables for speaker wire. 
My amplifier DF is >10000
My wire distance is 4000 feet. What guage do you reccomend,  777MCM ?

Something to be said for consistency and conviction.
Certainly no farther out there than having metal buckets, crystals, and rocks all over one’s listening room, or spending more on cables than on one’s electronics and speakers.  Sort of like gravity, this hobby seems to indiscriminately attract all who fall within its orbit.

"My wire distance is 4000 feet. What guage do you reccomend, 777MCM ?"

Any longer and you will need a shortwave.

Mr. djones51

I don't like your jokes:

"My amplifier DF is >10000
My wire distance is 4000 feet."

Is that comes with an IQ of a single digit?