It should work like a SVOD service like Netflix. A flat monthly fee that would grant you access to older titles like PS1, PS2 and other platforms like Dreamcast, NeoGeo etc, etc and a 'pay-per-view' style payment option for newer PS3 titles like Last Of Us.
This a' la carte option isn't going to take, at all.
This a' la carte option isn't going to take, at all.