Which territory are you talking about? SCEI has allowed for a plethora of thrid party PSOne games onto the Japanese service and even SCEE has been better about third party support having backers such as EA Europe and Zoo Digital who have release games onto the UK service, SCEA only has Konami's SOTN on the US/Canada Store and I a mconvinced that is only due to the XBLA having the game as well.