Sony, June this year:
"PlayStation 4 won't impose any new restrictions on used games. This is a good thing," said Tretton, to huge applause from the audience in attendance. "When a gamer buys a PS4 disc, they have the rights to that copy of the game."
Sony's Software Usage Terms, updated today:
6.3. You must not lease, rent, sublicense, publish, modify, adapt, or translate any portion of the Software.
7.1. You must not resell either Disc-based Software or Software Downloads, unless expressly authorised by us and, if the publisher is another company, additionally by the publisher.
Liars. Similar language has been found on the boxes of previous PlayStation models, but that's hardly a comfort.