Not even that. Trust me, no one would set up a server hosting tons of illegal files to download as one source for everything. Stuff is scattered among various OCH like it is the case with everything else as well.
Freeshop grabs the content directly from Nintendo's servers. It's just the way their servers work, that this is even possible and in the world of CFW/Hacking, this is quite revolutionary. It's like if someone figured out how to fool Steam into thinking you bought every single thing on their shop.
Of course PS3 stuff is hosted somewhere on Sony's servers. But no one knows how to access it respectively it will be encrypted in some way that no one can make use of the data, not even on CFW. If it was possible, we'd have such a tool already.