I don't know that this is all-or-nothing. The same law that protects people from stealing GPL code also protects movie studios from having their content copied

I don't know that this is all-or-nothing. The same law that protects people from stealing GPL code also protects movie studios from having their content copied and redistributed without permission. And I wouldn't be at all surprised if some of the GPL family of licenses' restrictions on exactly how you can use GPL software are legally difficult to discern from media companies' efforts to restrict how we are allowed to consume their works. But there are things that I suspect would be easier to disentangle. I wouldn't mind seeing some sort of provision where copyrighted works can more easily fall into the public domain when they've been abandoned by their copyright holders, for example. We could also stand to roll back some of the power grabs that media companies have managed to get codified.