Over at UpYourEgo they've written a great post about what happens when the free download services fail. People don't just give up on finding the content. They just go to less legal methods.
"I heard one episode on BBC 7 once and never got to hear the rest. I searched Aubible, I e-mailed Audible, I searched the web and contacted the BBC - in the end I accepted all legal avenues had been explored and started on the less than legal ones." [Link]
So, is the key to beating the pirates having more content on offer than they do?