|English: Introduction and descending motif from the first movement of Ludwig van Beethoven's Symphony No. 6 in F major (Pastoral) (Photo credit: Wikipedia)|
Because it can't be seized.
Because fans of classic music don't like Symphony No 7 of Beethoven. They like the No7 in A Major played by the orchestra X the 2nd of may 2010.
It's a mix of sounds, rhythm, intensity, personal touches. Even sometimes the low quality of some songs make them unique and powerful.
When my hard drive burnt. I found through torrents all of my pop music and rock albums within days except my classic music folder. Indeed, it was composed of songs grabbed in YouTube and among hundreds of albums of different players, different orchestras, some were live, some studio, I wasn't able to found them again.
By extension, electronic music is quite similar.
Its DNA is not 3 min formatted songs. It's mixes and mixes are live, they are hardly sizable.
By extension, live performance is quite similar.
Live concerts are not enough recorded. Artists usually produce 1 live album every three year. They should record all of their concerts to give fans the possibility to get the the version of the song of, let's say : "If I were a boy" sang in July 2011 in the Stade de France.
Take Adam Cohen, I discovered him live and loved it. But I don't like so much its studio albums. He's a live man. He should sold it.
Other solution, : produce zero live albums, and limit live experience to people who attend the concerts.
Isn't is so Renaissance style? :)