I think 40M is a reasonable lifetime prediction for the PS3 if it keeps selling at the current level. This would assume that third party games keep coming, Sony can afford the occasional price drop, and the big first party games don't flop too badly.
There's a small chance that weak sales and the worsening financial situation are going to cause some sort of a disaster for Sony, but barring that the PS3 is probably going to end up somewhere around 40-60M.







