- Lots of young people who might've taken up and instrument and played in a band in previous generations are now gravitating towards the visual arts -- graphic design, animation, video games, web comics, etc. These all seem like much hotter properties among the 14-21 year old crowd than rock music.
- Services like Netflix and Hulu have led to people spending more of their leisure time binge-watching movies and TV shows, which in turn leaves less room for music.
I don't want to spend too much time writing an essay on this topic, but those are just two of the trends I see as leading to the displacement of rock music in the broader culture. What was the last band that commanded the attention that Nirvana did in the 90s or Radiohead did in the late 90s/early 00s?
Even among geeks, rock and pop music seems to be a tertiary interest at best among the younger crowd rather than the #1 obsession it was for many of the older guard. If you want to be culturally relevant, it seems like you'd be better off pursuing the visual arts mentioned above.