Here's an interesting little chart that was leaked to TorrentFreak. It's from the NPD survey into Digital Music from the end of last year, and forms part of the RIAA's campaign for a "six strikes" rule in the US:
The sheer amount of musician's money the RIAA is pouring into lobbying for control of the net, and the enormous dents to our information rights they're calling for, and they're not even worrying about their bigger challenge.
Of course, a cynic might think that because physical swapping is even harder to do anything about, and attracts less glittery opportunities for RIAA people to meet-and-greet in Washington (always a good chance for them to put out feelers for their next jobs), that might be why we hear a lot less about hard drive swapping. But it couldn't be that, could it?