Times change, I would have thought most (non-audiophile) homes has some form of music centre or stacking system in the 70's and 80's. TOTP was a very popular TV programme and nearly everyone in my class at school listened to the Top 40 on a Sunday evening, 7" singles sold in great numbers, teenagers and younger people identified with particular genres giving us mods, rockers, goths, punks, new romantics, etc
Nowadays there's alot more on offer for entertainment, gaming, streaming as well as more outdoor activities like the climbing wall mentioned above.
We've three kids, aged 28, 26, 24, the eldest is a great drummer but his main interest is most certainly outdoor activities, from skateboarding and BMXing when younger to now mainly climbing and bouldering. The middle one is mainly interested in Art & film, the youngest gaming and working out at the gym.
All of them are interested in music and enjoy a wide variety of music across a gamut of genre's , alot of the time the introduction to the music they listen too will come from film or games, to the best of my knowledge none of them own a hifi , they all have big TVs, phones and headphones.
Having said that apparently a growing number of younger folks are buying LPs to enjoy music and unplug from the Internet, records also deemed to be pretty cool.
I think it's a win win all round, more choice and more availability.