One thing about a locked node (or a do-it-yourself Black Box) would be that if someone does crack it, that person will be showing their intentions - to take something they weren't meant to take. That is how it would be addressed in American court, anyway - the "why". This is the reasoning behind why I think Black Box nodes would be a step in the right direction for those copyrighting concepts.
Nevertheless, then when someone else decides to create their own Black Box to do something better than someone else's Black Box, woohoo! Then, who owns the "copyright"? LOL Can't help but complicate things, since
writing sort of has these sorts of goofy analogies. Like, how much of an idea can someone steal, before it's considered theft by the legal system? In my mind, taking someone else's idea and using it to make money is a crime. But, one Hollywood producer told me bluntly, "You can't copyright ideas." Great. So all those conversations I was having online with all of those insiders meant I just gave up my hard earned thoughts. Pooo-eeee.
Anyway, I'll always pay for what I use, if it has been purchased with such an agreement.