Earlier quoted context omitted.
And yet I've got three pair of $300 headphones in my house between my wife and I, two of which are 6+ years old. If you take care of high quality headphones they will last quite along time. Wire wears out? Replace it. Ear pads lost their shape? Replace them. So yaaaay dongles? Which that's even more fun because if I'm listening music for any length of time, there's a portable amp in between the phone and my headphone…
>Wire wears out? Replace it. Is there any reason why a replacement wire with a lightning connection on one end wouldn't be possible?
Good luck getting "piece of replacement wire" approved by the MFi program. Apple will only let you sell a complete device (because otherwise someone could just buy lots of these replacement wires and bypass their licensing program)