In college, someone had added a parental control password to my roomates PS2 without him knowing it. Blocked out the unrated-rated Transformers movie (animated one from the 80's). Luckily it was only changed to 0007, otherwise we would have spent years trying to guess what it was.
I say, lock all PS3s from adult content via mandatory update (no update, no adult content). Then force all consoles to be unlocked via some pre-approved mechanism that some kid with his parents credit card number can't bypass. Then, put whatever content you want on the Playstation network. If that can't be done, I doubt they'll even consider doing it.