What can publishers learn from indie rock?

Michael Clarke talks about the resurgence of vinyl and what it could mean for book publishers:

What indie rock bands have figured out is that the purchase of music does not have to be an either/or proposition. They don’t make their customers choose between analog or digital. Whenever you buy a record from just about any indie band, it comes with either a CD or with a card that contains a URL and a download code so you can get a digital copy at no additional cost.