Kingdoom911 Sony already stated that they give their systems 10 years before they cut the life support.
In 2004, or 03 don't remember that was the last year I saw a PS1 game, and PS1 came out like 1994, or 05 forgot. Yeah I know what you're going to say "that wasn't 10 years". The only reason the PS1 got cut short was because the PS2 was like $170 by this time everyone had one.
As for the PS2 it might not be dead by 2010, but it will be close. People are stilll buying them up like crazy.
most people are buying 360's and some, like me, are buying PS3. Ps2 will last as a good system for a few more years. then the next gen consoles will completely take over cause everyone wants good games with good graphics.