Watch the podcast versus reading the assigned classic?

At one point will my library begin adding podcasts to the collection development policy?  Will a model be derived which enables aggregators to sell content in a wholesale manner?  If Bleak House is requested by patrons as a podcast, will vendors create a way to resell in bulk? I ask these questions on Penguin Books making Christmas Carol available in podcast format.  http://news.bbc.co.uk/1/hi/entertainment/4534126.stm