Sony has said there will be no repercussions to using used games on their new system. They saw the can of worms even a rumour caused and decided not worth the effort.
Umm... it wasn't a rumour. It was them saying in an interview that they are going to be charging for used games that aren't installed. They are essentially doing this to kill off second hand game stores.
From forbes : All Xbox One games must be installed to the hard drive, either through digital download or the disc itself. That allows easy access to titles without disc switching, but it also causes complications. If you buy a physical disc and want to say, loan it a friend, theyíll have to pay an unlock fee to get the game to work on their system with their account. Thereís no word on either how much this fee would be, or how many times you could do this with one disc. If the fee is small enough, $10 or so, it would allow people to essentially clone games for cheap. But if itís expensive, like $30, then that really puts a damper on sharing altogether. Microsoft HAS clarified that if you play a game on a friendís Xbox using YOUR account, a sharing fee is not required. But if you loan it to them to play on their own account, there would be.
And also whatís clear is that buying a used game will likely come with this same additional fee, meaning the era of uber cheap used games where Gamestop makes 100% pure profit is likely over. Sony so far has refused to comment on their own system for used games, but speculation is that itís similar to MIcrosoft, and the two will stand united on this front.