Anybody who initially supported SOPA, has to come out against SOPA to win any browny points as far as I am concerned. Dropping support is just weak and non-believable.
On the other hand, the game companies probably also don't want to tick off the media industry. So while Nintendo, Sony, et al don't have much to gain from SOPA, they have quite a bit to lose if the major content industries decide to blacklist their platforms.
Right now Hollywood is desperate to break in to videogames. They know that games are an important part of the future, and want very badly to start making good movie based games. But so far they haven't had much luck.
As it stands, if the game industry couldn't continue making weak movie tie-ins, it wouldn't be that big of a deal. They are a handy cash cow, but as often as not they are abysmal games, no thanks to the movie industry itself.
I was talking more about things like cutting off Nintendo, EA, Sony, etc. from deals with Netflix, licensing music to use as game soundtracks, and things like that. Basically, not letting their media hit the game consoles.
So what? Surely the aim is to reduce the number of companies financially supporting SOPA and similar legislation, not punishing companies for wanting such bills to pass?