In an ideal environment, cables won't mean anything.
For most people, they can get away with using anything that at least can tolerate specific impedances.
The problem is, that is not the case for everyone. For some people, they cannot easily get away with using low-grade materials because they can be more prone to pick up particularly bad interference. And lower-grade mediums might be more prone to general degradation of the signal, if not a loss of some information due to competing information.
Note: lower-grade mediums would refer to wiring that resembles coat hangers. Not going to work in every situation (ignoring length concerns
😛), but could work in many (see previous side-note).
I swear by general store-brand or monoprice large-gauge speaker wire.
Hell, monoprice cables work perfectly even for audiophile situations. I'll argue that till the day I die, unless I get the chance to trial obscenely-expensive speakers for a double-blind audio test between monoprice cables and wiring, and whatever ludicrous materials someone chooses to provide... AND, I'll need to be able to consistently discern between the two.
However, that will not prove true in every situation. Some environments have odd electrical or interference issues, that simply persist and cannot be fixed without gutting everything and trying again. These environments do exist out there, and cause havoc for different issues. But such an environment that can be alleviated by insanely expensive equipment but not general "common brand" equipment, probably isn't a great place for any leisurely pleasures.
But that's just for the interconnections.
The actual hardware for this occasion is extremely important - to a degree.
A discerning ear should be pleased with $2000 total in expenditure on audio equipment. They may wish to spend more, and be more satisfied... maybe $5000 between speakers, subwoofer, receiver, any intermediate devices for more specific processing tasks. Maybe even proper sound control in the room, but that would definitely add to the cost.
To spend upward of $10000 on speakers alone, imho, is a little outlandish, but if you have ears that definitely seem more comfortable while sampling that more expensive gear (I surely hope such a person has sampled speakers while trying to ignore preconceptions of specific brands or models based on prior research...), then if it is your money, then treat yourself however you fancy.
And it's expected that the very wealthy who invest in audio equipment tend to just spring for the most respected brands or models that also cost a pretty penny.
If I could afford, I wouldn't mind spending a couple grand on speakers alone, for example. I've heard higher-end speakers in the same setting as slightly lesser expensive, but still not cheap speakers, and definitely liked them. Again, the high-end that I found prohibitively expensive but definitely better than everything else I've heard, was about $2000/pair front towers. I think the bookshelf speakers were like $500 each. Can't remember the center, probably $700 or so based on bookshelf speaker price.
If that wasn't a huge chunk of my income on speakers alone, I'd do that. Same with receivers over $1000. Can spend far more than that, easily, I'd stick to $1000 or less, think the most expensive I heard was no more than $2000 or so. Besides the awe of listening to such expensive audio, I don't think I experienced anything different from $1000 ones. On higher end speakers, with specific options, might be able to better utilizer ones $1000 or more, but I wouldn't even spend $1000 on a receiver, or even bother with distinct amplifiers, for big-retailer-friendly speakers.
I'm not even sold on the need for even using a separate amp of any sort on such audio equipment I'd consider, as I was more than satisfied by a quality receiver directly driving the speakers and handling the input processing.
