Alistair, it seems there is no limit to the levels that companies will go to sell to those with hi-Fi and too much money. Try looking at HiFi + magazine...
Cables, mains plugs and now, of course, ethernet connections.
I've not yet see anyone offer a dedicated HiFi " Gigabit Hub" but without WiFi and other things that might "corrupt" the audio, but I'm sure it will come!
Yes, I've spent a lot of money on HiFi hardware (but not as much as on Morgans) but I listen to music, not the hardware.
One side effect of good HiFi is you discover that some music is not at all well recorded, whilst other recordings from the past are sublime.
What we have works and I see no need to change anything, although a 4K TV is on the cards next year.