The last I heard you won't even be able to take games to your mate's house and play them on their console.
Quite frankly, they can piss off.
I don't know about that... The fact that it disables games if the Internet goes off certainly seems to imply that, but I don't think they could be that stupid... Especially since Sony is on the record stating that the PS4 won't disable used games. That would be deliberate suicide.