Nope, you see this gen is different, people who have never bought a video game system are buying, because of games like Wii sports, and Guitar Hero and Mario and Sonic and so on, see games are selling the system, just not the games that the core gamers enjoy, my parents and my uncle bought a Wii for themsels, becaus eof the games that Wii has, that PS3 and 360 don't they barely even know what a PS3 or a 360 is, but they know the Wii and they love it, this is why Wii will surpass the records of all other consoles.
Its on the upswing, riiight, have you seen its sales, its declining, and will be back down to low level sales again, PS3 has no staying power, and is still undertracking systems like the N64 and PSP, so when I say 30 million more tops i'm speaking from the evidence, its sales are not showing any signs that it will be able to top 40 million, 2008 and 2009 will be its peak years and its not showing that it will be able to post the numbers, so yes i do believe i'm being generous.
PS2 won't last anywhere near 8 more years, you got probably 4-5 years tops and by the end it'll be posting 1-2 million a year at most, because its share is going to be eaten by the Wii, it expeienced good sales because of limited Wii supply and will only drop off further as Wii supply is ramped up and price drops, right now its sales are being fueled by limited Wii availibility and the fact that its the cheapest system on the market, but those advantages are going to go away, 30 million more for PS2 is very optomistic on your part.
Predictions:Sales of Wii Fit will surpass the combined sales of the Grand Theft Auto franchiseLifetime sales of Wii will surpass the combined sales of the entire Playstation family of consoles by 12/31/2015 Wii hardware sales will surpass the total hardware sales of the PS2 by 12/31/2010 Wii will have 50% marketshare or more by the end of 2008 (I was wrong!! It was a little over 48% only)Wii will surpass 45 Million in lifetime sales by the end of 2008 (I was wrong!! Nintendo Financials showed it fell slightly short of 45 million shipped by end of 2008)Wii will surpass 80 Million in lifetime sales by the end of 2009 (I was wrong!! Wii didn't even get to 70 Million)