This is all part of a much more general issue: restriction and even legal prosecution of "pre-crime activities".
- You get DRM-encumbered products, because manufacturers are afraid you might copy the product. Copying is an action that has many uses; piracy is only one of many possibilities.
- The DMCA prohibits circumvention of protective measures, because...why? The circumvention isn't the problem, nor are most of the reasons you might circumvent something. It's all about the relatively rare edge cases that might be illegal. Consider hacking into your car's computer, for example: there are lots of reasons to do this, from curiousity to performing minor repairs yourself.
This mentality goes a lot farther than media and computers:
- Consider sexting: Why, exactly, is it illegal to send sexy pictures of a 17 year old?. Doing so may be naive, and there are potential crimes, but the vast majority of cases are boyfriend/girlfriend exchanges. Again: it's the crimes that should be prohibited, not the behavior that might lead to them.
Once you start looking:
- Why should it be illegal to fly drones near a wildfire? Interfering with firefighting efforts is the problem, but if there are no aircraft involved, where's the problem?
- Why should it be illegal to modify your router, as long as you don't cause interference with other devices?
- Why should it be illegal to do drugs, as long as you only affect yourself?
- Why should it be illegal to host a poker tournament in your home?
- Why should it be illegal to drive without wearing your seatbelt?
- Why should there be a minimum drinking age?
Not too long ago, I came home from work, grabbed a beer, and took a lazy evening's walk through the woods near my house. In the US, that would be illegal, because...why, exactly?
And on, and on...law after law that isn't about restricting actual harmful behavior, but rather restricting innocent activities that have the merest potential for harm.