The business model relies upon the scarcity of copies and that the copyright owner is the only person able to make copies. That was reasonable many years ago,

The business model relies upon the scarcity of copies and that the copyright owner is the only person able to make copies. That was reasonable many years ago, but today copies can be made and published by anybody with a computer in milliseconds. The business model was overtaken by technology a long time ago, but instead of shifting to a different model, they rely upon the law enforcing a kind of Ludditism where we all pretend that this amazing copying and publishing technology doesn't exist for anybody but the copyright holders. There are alternative business models – you mention live shows and concerts, but there's also things like the street performer protocol. But as long as the law artificially props up the old-fashioned way of doing things, there's no impetus to try other things. They aren't intrinsically entitled to this specific business model and it makes less and less sense to keep up this weird fiction for this reason.