Larry - what triggered me was that last week we had nation-wide TV commercials advertizing a Joe Cocker concert (nation-wide as far as you can call it that in the Netherlands, but I digress).
And as much as Waits and Dylan avoid the mainstream music industry, you must remember that there's a world-wide market for what they create, and they cater to it - on their own terms, but it's a business nonetheless.
But let's not forget to feed our heart, soul and brain on what creative geniuses conjure up!