Although I’m sure EA do not see the humor in this, it is amusing for the rest of us. If you think of it as a marketing point of view, it could either be a catastrophe or a success. I for one have only heard about the release of Sims 3 via my friends. I have not seen any advertising of such and if someone hadn’t brought up the topic one day at school I still would have had no idea and its only 2 weeks before the release. The leak of the game and the news of its leak will be great advertising for the game, if only EA could get the leak under control and remove it as best as they can.
I personally have not downloaded the game (and nor will I as I lost amusement in The Sims about 3 years ago) but I know a few people who have. My friends who have it are so addicted to The Sims (they would easily have every expansion pack for both 1&2) they will still go out and buy a copy, if not for the sake of actually having a sense of worth by being able to physically touch the game, for the other features that would be included on the disk but not in the leaked version.
If EA grew some brains and really wanted to try to stop the illegal distribution of their games all they have to do is add an online component (maybe such as being able to download more furniture or clothes, and releasing a new object every month). This way they could easily track the illegal keys and cracks. It would also stop illegal versions of the game being able to access this online component, hence loosing some of the gameplay. People may then go out and buy it, if they enjoyed it. I am sorry if this has already been in place as I have never played Sims 2, just Sims 1.
It is also worth noting that the effect of the leak will be lessened by the fact that thousands of people have already pre-ordered the game.