said by ISurfTooMuch:Yes, but define due diligence. Suppose I share an apartment with a roommate, and I pay for the Internet connection. So, what should I do to prevent him or her from downloading? I can certainly password-protect my computer, but what am I supposed to do about theirs? I really can't do anything about it, in fact.
Sure you can. The connection is in your name. If the roommate won't stop pirating material, you disconnect his/her computer and if they won't follow the rules, you turn them in to the RIAA and stop being their roommate.