I think there’s a lot to be said but the most important thing is context. Classical musical is for the rich people. Why would i say such a think? Classical music takes time to hear, it’s not easily accesed by the unexperienced, they might like the sound, but harmony and melody are complex element. To some degree your ear needs to know a little of music history to understand some things, and some harmony to understand some choices in melody and why these things are great and innovative when they’re. The thing is that not everyone has the time to sit and learn how music changed over time, nor the money to pay musical lessons to understand the harmony. Musicians often forget that they ears work different than non-musicians and that things one hear as beautiful are the result of a knowledge in music and it’s rules. Hearing music for it’s intelectual greatness or it’s arquitecture instead of the feelings is, like it or not, the same difference as driking wine and degustating wine. You can wonder why not everyone desgustates, but most of us just want a nice drink for the evening. It shocks me a little when a read classical musical complaining that complex instrumental music has been relegated to be just a little part of music, when, if you have studied western music, it’s always been that way. Complex music was born for a shorter audience, made valid for it’s class-dividing and elitist secretiveness. Jazz suffers from other form of problem, that is that jazz music is made from musician for musician, a non-musician might like some things, but you need to know a lot to know why something is good or not so good in jazz. Of course people will go to something they can understand easily instead and that takes 10 minues of their time and requires their full attention, even more living in an age where you have to multitask and things have to go fast.