'borrow' car » someone loses a car.
Download movie » you use up your bandwidth, otherwise no-one (apart from the uploader/server) really loses anything.

I don't quite think their analogies work too well >_>

I don't know about Blu-ray - I don't have one, and I don't expect to any time in the near future.  They command a price premium to DVDs, as well as more expensive hardware, and requiring a recent TV for it to really be useful at all.  DVDs are still the mass medium.  Blu-ray may take a while to take over the way I see it.