naw you get games like The Last Guardian which take forever to come out and many people believe it will never happen. But I cannot recall any games Sony showed as a marquee title(like at E3 or other major trade shows) that just got canned.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut