Well, there is no Crisis Core on PSN, but if you have a PSP, you can buy a physical copy. Phantasy Star Portable 2; physical PSP only.
I think Sony is genius, but I am not happy with them. There is some nasty shit you can do with your Vita and the PSM SDK (rectified by the $100 price tag in November) but I still don't buy their reasoning for not having Phantasy portable 2 available on PSN.
I think they think that I'll buy PSO2 on Vita if I don't bust my nut all up in PSP2, and will end up paying more child support to them-- sorry
They want to sell new games, and probably figured out our buying habits.