It would just be ridiculous if someone would still buy a PS2 when PS4 will launch, or when the PS3 will be cheap to buy (then there won't be any reasons to buy a PS2 instead of a PS3, especially if there will be any BC PS3:s). Since there are no longer any BC PS3:s in Europe (and soon won't be in Japan), then the PS2 sales will drop very slowly...
Can anyone tell me, who is buying a PS2, now??? The PSP has both likely graphics and prices, and has many more advantages, so why don't buy it instead? "The PS2 had a great game library...", what a lie! Every successful PS2 game has or will have it's sequel on the PS3! Ok, the PS2 maybe had a good game library, but not the best! Even if you don't count with the BC, then the PS3 will still have much better games... Tell me any good PS2 exclusive that WON'T go on PS3!