People do my job for free. Lots of them. I still get paid because I produce work that is worth paying for, and I supply it to my customers the way they want it instead of telling them how to take it. And lots of people do all kinds of jobs for free, they are called hobbies.
People don't pay for music because it's most of it is not worth paying for. Some of it's not even worth the time it takes to download it.
Besides, I wasn't even talking about taking music because you can. I was talking about downloading movies, because the file formats are easier to work with. No DRM, ever. Just works, as is, on any computer, in any DVD player. I only watch it once and trash it anyway, so it's still more like the public library.