It's tough to ignore the chance to expand your fanbase by so many millions, which is why third-party developers almost always stick to multiplatform productions.
BioWare didn't used to cater to the PlayStation crowd but things have changed this generation. PS3 owners already got Dragon Age: Origins , Dragon Age II will launch for the PS3, Xbox 360 and PC in March, and a PS3 iteration of Mass Effect 2 will be available in January. Therefore, everyone is assuming Mass Effect 3 will be multiplatform as well; after all, ever since EA acquired BioWare, it was almost a foregone conclusion…EA just doesn't do exclusivity. But although the studio won't confirm anything, they've once again confirmed the desire to "hit as many fans as possible." This is what bosses Greg Zeschuk and Ray Muzyka told Gaming Union :
"I don't know, it’s hard to predict all of the future. But part of it I think is that certainly as a company EA is a very multi-platform so it's one of the values of EA is being on as many platforms as possible.
We’re not confirming specific platforms for the future titles we haven’t even announced. Mass Effect 3 is a complete unknown, even though it’s part of the trilogy, it's not officially announced. But it makes sense for us to hit as many fans as possible. I'd chalk that up in the likely category, but nothing’s definite yet."
At this rate, it seems very unlikely that Mass Effect 3 will be exclusive to any one platform, or even that BioWare will make anything exclusive with EA calling the shots. Turns out, that's a good thing for PS3 owners.