Rockstar Hope To Create An Entirely New Franchise With Agent.

But many people are miffed as to why Rockstar are launching the game exclusive; especially when third-party exclusivity is essentially considered dead.
[quote]
“At this phase in the cycle, when you’re trying to launch a new franchise, exclusivity can really help you launch the franchise. It can give you the kind of platform that you need to start exclusive, start in the right kind of way with the right kind of partner. Exclusivity does work,” said president of Take-Two, Ben Feder.

“I have a lot of confidence in Sony. I have a lot of confidence in their ability to lead the market, as they always have. Their console is a terrific platform to be developing for, and Agent is a great testament as to our belief in what that platform can do, and what they can do with us as part of a partnership.”</blockquote>

So there you have it. A combination of confidence, but also the marketing advantages the term "exclusivity" generates. We can't wait to hear more about the game.