As relates to entertainment media, as we are discussing, I think the Industry bodies could improve things by being a bit more realistic. A recent change in law made it finally legal to rip CDs that you paid for possess onto your MP3 player or home media server using, say, iTunes. But the industry fought back and had the change in law overturned, so it is once again illegal in the UK, just as it always has been back in the days we'd rip LPs to cassette tapes for the car.
IMHO that is just petty. They are fighting a lost cause and as far as I know nobody has ever been prosecuted, probably because they know darned well a court would likely find a way to sympathise with the 'offender'.
But as long as the rights holders behave in that silly way, rightly or wrongly, people take the view copyright is a bad law. And then they can reconcile in their conscience taking their 'offending' to a whole new level, that of downloading content that is of real commercial value and they have never paid for.
If the public could be persuaded that copyright was a good law, I think we would see a lot less infringement.