Like most things, the internet as a medium for making money is still in its infancy. By now, it's a screaming toddler in the troublesome twos.
There is still a high risk profile for anyone wanting to invest and the returns can be great, but there isn't an accepted norm yet.
Just like most shifts in medium it is a process to get to a point where it's got some ground rules and some universal acceptance.
Its sort of no different to when the talkies came in with cinema, when radio became universally popular, and then when TV took over from radio.
"Digital music will kill the business" - well, it will change it, but kill it? No.
In my view, once the really smart business heads get their brains around it, a method for fully exploiting the new way will come to prominence. Regardless of how this happens, an investment won't work without the talent - the really savvy investors know this, and will want to look after their investment. How do you do this? You make sure your investment has enough of a return to not go elsewhere.