I always thought Apple missed a huge opportunity to build a social network on top of iTunes.
See what your friends are listening to, develop communities around shared musical interests, get better recommendations. Sort of like YouTube now.
iTunes Ping: https://en.wikipedia.org/wiki/ITunes_Ping
Funnily enough, I'm trying to do this, and just posted in "What are you Working On?" Not sure I'll have much luck if Apple couldn't make it happen though! https://news.ycombinator.com/item?id=46268285
They do? It's pretty limited but if you tap your profile photo at the bottom of Music and then tap your profile photo in the menu again it'll bring you to a "Apple Music profile" of sorts you can follow people with.
Funny enough iTunes Genius was amazing at discovering new music as it created a tree of "users who bought this, also bought these songs" and I spent a fortune on the iTunes Store on single songs.
It's now all but dead, probably because with apple getting a monthly cut with Apple Music either way, there's no incentive to maintain such a system.