Wow, I guess they really think it'll take that long for a decent userbase.
If Sony consoles had five-year lifespans like Nintendo's, then we should've already seen the PS3 late last year and by 2010, they would be gearing up for the PS4.
Imagine someone saying they supported the N64 and GameCube only in the last year of their "lives". o_0 Who would do that? (Oh, wait, Eidos is putting out Tomb Raider: Legend for the GameCube still...)
SNK was a great supporter of 2D games. You think Sony would even want SNK? Metal Slug is cool (even if most games are very similar). I also wouldn't mind if KoF stayed in 2D a little longer - KoF 2006 and the Maximum Impact games - the ones in 3D - don't look very good.
Nintendo + SNK = better combo than Sony + SNK.