First they bring out DLC (means they don't have to finish making the game before they can sell it - plus it's a great way to charge for bug fixes). And of course DLC ain't transferable so if you sell on your game it's useless to you and the buyer has to buy it too.
Now they nobble their online play. It's Sony for now but they'll all do it.
How long before they start scamming us with "activation fees" or some other BS way to destroy the second hand market even more?