Al ears said:
As you get on in life your hearing diminishes so, if you need a new cartridge, do you buy a cheap one because you can no longer discern small differences or do you buy a more expensive one that will hopefully bring more out of a recording for you to hear?
People buy what they can afford!
If people can afford a £100 cable, they buy it. If people can afford a £2 cable, then all cable manufacturers are snake oil salesmen. If people have £3,000 they buy a Naim or Linn Streamer. If people have £30 they buy a Raspberry Pi as all digital streaming is the same.