How many people here borrow stuf from friends or family? Borrow a dvd to watch , a game to play etc. They (the respective industries) want to stop this.
How many buy secondhand/used/preowned stuff? Again, they want to block this.
Why? Money of course.
I have a mate who buys loads of DVDs (legally). I'll borrow a few to watch (this is apparently illegal), return them and buy my own copy of the ones that were good. If he doesn't have what I'm after, I'll either buy when it's bargain basement price eg £3 or buy from ebay secondhand. Now I didn't pay to watch a few of those DVDs. I thought they were crap and not worth wasting money on. I see no difference between this and downloading something and watching. What happens to the download is the interesting bit. With the DVD, I'd return it. The download should be deleted but isn't - it's usually kept, copied and passed on (which I disagree with).
As for secondhand, again they want to stop this. Games companies are stopping people from playing online using a secondhand game, unless they pay an additional fee (proposed system). Contentious issue IMO. A (exaggerated) parallel could be buying a car. If you buy brand new, you could use it on the roads. Buy secondhand, and you'd be restricted to your own private area.