PS3 - the new rootkit

Sony just doesn't learn.
http://www.vnunet.com/vnunet/news/2158170/sony-ban-second-hand-ps3-games
In short, Sony is now saying that they putting in measures to make sure you cannot resell games. How stupid is that?
They are mad because resales don't generate them any money, only initial sales. Sony, if you're that ticked about it, open up a store where you resell games, in competition to EB games. Don't force everyone to pay marked up prices for these games.
The thing I wonder is this: What if I buy a game, bring it to a friends house to show him, and then he buys the game? Will he not be able to use it because it sees mine?
Dumb, dumb, dumb