PS3 is different. A gadget is either considered a value or it isn't. You don't see people buying UMDs _because_ they're a ripoff... only possibly _in spite_ of it.
The closest thing to "camp" in the gadget world is "retro." For instance, buying an old Intellivision or whatever... but i don't think Sony can effectively market the PS3 this way unless they plan to have another PS3 rollout in 20 years. =)