Earlier quoted context omitted.
I don't think that it is entirely accurate to equate news delivery with music delivery, nor do I think the lessons from journalists are entirely relevant when it comes to building a social platform for music playlists. Cultural objects (e.g. music,art,fashion,film,literature etc.) are substantively different than news articles. The news is largely valued for its accuracy, timeliness, and topical relevance to a reader…
You're being pretty dogmatic about what music is... You may be right that, in some respects, "cultural objects are substantively different than news articles", but not in ways that are germane to this argument: "The news is largely valued for its accuracy, timeliness, and topical relevance to a reader. Music and other cultural objects are valued for their enjoyment, which is contingent on individual personal preferen…
You are right when you say that compilations like "Ibiza Club" or "Ellington for Lovers" make a lot of money: so does selling Muzak (the background music in supermarkets and most commercial spaces with music). Background music is the ultimate "genre" that is compatible with group preferences: no one is offended... but at the same time, nobody really cares.
I agree with you that musical preferences have more to them than "people like you also like"... this would disregard the reality that people sometimes do categorize music by situation/mood, categories like listening to music to dance, exercise, study, make-out, host cocktail parties etc.
But as I suggested before, domain specific categories of music do not have to be mutually exclusive to personal preferences (currently they are). Let's say your goal is to have romantic music. Why not use a "people like you also like" function bounded by the category of romantic music? This way you could get romantic music, i.e. music everyone thinks is romantic, and romantic music that you like as an individual. Even better would be to use a "people like you and your girlfriend also like" function within the specific category of romantic music :)
"Also, with all the choice available, it's easy to overestimate people's desire to even HAVE choice." This is pretty fatalistic don't you think? I think the explosion of choice online frustrates people because they KNOW something is out there that they will really love, but they can't FIND it. This screams opportunity for a website to act as a choice agent to direct people to the music, video, merchandise etc. that they want but can't find themselves among the infinite choices. Infinite choice results in infinite search costs without a decision agent.