CCandRs
First off, I agree that software has been shared for a _long_ time. And I, too was pretty annoyed the first time I bought a product, with source code, and found a great wodge of _my_ code, shorn only of my name, email address, and copyright (along with 'feel free to use this but keep my name in the source') notice. But I didn't stay up nights thinking of ways to get even.
The whole license kerfuffle reminds me of those restrictions that get tacked on to land deeds. Many of them, like the part where I can only have two non-white servants, and only the asians, not the "colored" are allow to actually live at my (under 900 square-foot) house have thankfully been rendered legally moot. Would that these bizarre restrictive successors follow the same route.