My thinking is that their plan is to put an end to the PS2 soon after 2010. I think signs pointed to this coming when they released the PS3 Slim without capabilities to play PS2 games. And now rumors are emerging that they plan on selling all PS2 games over the PlayStation Network. (Rumors of Dreamcast games over PSN as well, I talked about this on
my blog today). So when people's PS2's are either sold, or broke, or don't have any more room in their entertainment unit because they got a new PS3 Slim they'll have to AGAIN buy their favorite PS2 games....
So I believe they will be putting an end to the PS2 (what I feel is the most significant console in history) sometime soon.
MY PLAYSTATION BLOG