This article caught my attention. So I thought I'll share it. This is just one third of the article.
While neither Sony or Microsoft seem to be overtly pursuing huge exclusives, in that they're continually approaching developers to create system-selling software...I almost think they should. Microsoft has been known to do this more in the past, but the idea of keeping a big title on only one console seems counterproductive from most every angle. This is a little frustrating from a gamer standpoint, too, just because exclusive titles tend to be the best games available for that particular platform. But look what a huge exclusive can do concerning hardware sales: FFXIII has caused PS3 sales in Japan to go through the roof and although FF is always big over there, we must also consider that FFXIII is not available for the Xbox 360 in that region. When the game launches here March, you can bet you won't see the same drastic PS3 sales spike. Sales may increase, of course, but nothing like a 216% surge.
This is why I'd like to think we'll see more PS3 exclusives in the future. The user base is to the point now where developers can still turn a healthy profit (plenty of potential consumers) and besides, they may wish to harness the power of the PS3. Uncharted 2 is a good example of something that must be on Sony's console and still manages to be a big success. As big as it would've been if it was multiplatform? Maybe not. But it might not be considered the best game of 2009, either, and PS3 sales would not have benefited as much. So yeah, if FFXIII has remained exclusive, Sony would be in a better position come March. That's all I'm saying.
http://www.psxextreme.com/feature/499.html