It would actually be interesting to find out the percentages of people who predominantly listen to radio on:

FM
DAB
Internet
Freesat
Freeview
LW, MW and SW.

I suspect the latter will be in single figures.....

My in-laws live in a stone farmhouse where (a) WiFi does not travel well and (b) has thick stone walls and wood beams so it is challenging to wire the house up with ethernet..... and (c) it is actually cheaper to use the mains networking than wiring up.

So mains networking allows their smart TV in the lounge to connect to the fibre router in the office upstairs. The distance between the two is less than 10m but just one stone wall blocks the WiFi completely. This is despite living in the countryside and there are no other WiFi networks from neighbours as there aren't any neighbours!