Incidentally, I don't MPAA or RIAA's basic problems are piracy.

The product sucks ("Hey, wanna go see Porky's #37?")
Competition for disposable income.

The first could but fixed but not the second, and it means Hollywood is permanently relegated to second place status. 30 years ago if you had extra cash a teenage could go to a theater or buy by an 8-track, but now spare cash is now likely to go to a computer game, Second Life, etc.

Porn has the same problem that the product sucks, plus comps (Vivid gets no sympathy here). And competition from both pirated and free or amateur is a big deal too.

PS. The record industry's policy of killing off music stores has got to be the dumbest move ever. Stores that only sold music meant that a consumer wasn't tempted to leave with anything else. But now sales have been moved to retailers that only have music as a small part of the overall merchandise a consumer might buy. Do you think Best Buy cares if a consumers walks in the story to buy a CD and leaves with a game or such?