First of all, male pattern bladness? Secondly, the RIAA is the the Recording Industry Association of America. I think the acronym you're looking for is the MPAA, and like the RIAA, they only cover America.
I don't see what the problem with copyright theft notices is, to be quite honest. Never have I seen one take up more than 30 seconds of my time, and never has one gotten on my nerves that much.
Perhaps they're in place to stop people pleading ignorance? If you are forced to sit through a short copyright notice at the start of a film, you can't later go on to claim you didn't know it was illegal when you've shoved a copy on the internet and ended up in court