I'm sure since the very first recording was sold musicians and music lovers alike have pondered the question.
My answer was simple. I don't want to know. If one could predict the future of anything it looses value. However, the unknown and the surprise of art is jovial. No one saw Robert Johnson coming or Beethoven.
Who could've have predicted Duke Ellington, Chick Web, Benny goodman or Art Tatum. Let's not even mention
Jimmy Hendrix, Sly Stone, Lauryn Hill. These are all surprises that came right when they were needed. If music keeps on giving us gems weather it comes from a dive bar in North Hollywood or from a youtube video. A good song is a good song. I love surprises. I can tell you where I was when I first heard Africa bombata's "Planet Rock". My reaction was "Who is that!" I know what I was doing when I heard Frank Oceans "Novacane" for the first time. It was a pleasant surprise. Every Tuesday I'm on i-tunes looking for new surprises. I also find Gems on sound cloud.com., I go listen to bands also. Some bands blow me away but then I don't hear from them ever again. Sometimes it's not about the fame or money of doing music. Sometimes we just have to get a thought out.
The future of music is in the hands of its writers. Me, You, Us.