To those who wonder, i have tested this last night on a teesny 1.0 , with a slim ps3 and installing both retail and demo packages work fine.
lordofthething : A Valid license must be found on your ps3 to allow the game to launch. Licenses , for now, are created by sony when you grab something online, and mostlikely containt your ps3's serial number, along with your hdd serial number and probably some other data.
Formatting a hdd , and placing your licenses back on it , the licenses won'T be correct , and your paid content wont be accessible.
In my point of view , there are 2 way to bypass that, fake the license, or remove the license check from the GameOS. Unfortunately, this is out of my field.
To the best of my knowledge, the .rif license files were never even compromised on the PSP. I ran a lot of tests on some free LittleBigPlanet DLC on my two psps, and came to the conclusion they are tied to the unique IDstorage keys of the device. The cryptography on the PS3 will be much stronger
That being said, we never had the luxury of hacking the hypervisor of the PSP, so master key discovery might still be possible.
Tried and not working: Pixeljunk Monsters, Monkey Island 2 SE, Super Stardust HD, echochrome (installs but hard-freezes the console randomly within 5 minutes of playing, regardless of if you use patch 1.01 or 1.02), Flower.