THE UNIVERSITY OF CALIFORNIA AT SANTA CRUZ, Professor Barnes uses The Dead to teach a principle in BUSINESS=
Do your what you love and the money will follow. It is called PASSION-BASED SUCCESS.
They also were one of the first to practice another staple of smart business= Social networking... every concert sold out since the Sixties. Mailing lists. Relating to their fans. Customer service at its core.
Not bad for a bunch of old hippies who decided to play music for a living.