I don't think the PS3 is going to last 10 years.
the PS2 is in what, year 8? and the past year it is selling pathetically. If it does have a 10 year life span, it won't be selling much in years 8 9 and 10, not even the PS2 could do that. I predict PS3 to have the PS2 year 8 slow down at year 5.