Thanks for the responses Chris. Indeed, copyright notices in files are legally
meaningless, they are solely documentation of who owns the copyright, it is a
good idea for them to be complete and correct though. Indeed, the FSF focus on
doing enforcement for software they own the copyright on. There are other groups
who do GPL enforcement (like gpl-violations.org and sfconservancy.org) on behalf
of other projects though.
I wonder if you could respond directly to the questions in my original post?
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