> Copyright violation and theft are completely unrelated.
I really do not understand what you are trying to say...
> theft deprives another individual of the use of the thing you stole.
OK. But for me,
Copyright violation deprives the *copyright owner* of the *value* of the thing you stole.
For instance, I would still call stealing "using money from someone else bank account without his authorisation" - even if the guy can still use the bank account after, wouldn't you?
Even when not talking of money like for GPL, the work of the copyright owner has some value which has to be "paid for" by giving back something.
Maybe I should not use "paid for" and "stealing" for non physical objects, maybe ther are better terms.