The only reason a good quality manufacturer isn’t involved with this whole cable BS thing is just that there’s no science behind it no consistent reality so essentially it is BS.
Maybe you can then explain why none — NONE — of the electronics manufacturers use the cables that that come with their equipment at audio shows where they obviously want their equipment to sound its best? They ALL use pricey aftermarket PCs. Hmmm. Clearly must be a conspiracy of some sort.