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nobody is putting a gun to your head to license software. This is a choice you make. If a company does something or demands something that is unacceptable for you, don't freakin use it.
The GPL is free code that requires you to change how you license your code if you use it. I don't think anyone here thinks thats wrong, even though that power goes WAY beyond the power a person would have if they sold you something. When Linksys (for example) broke the terms of the license, nobody said that the GPL should be overturned, they wanted the freakin code, because if Linksys didn't want to abide by the terms of the GPL, they shouldn't have used it.
What is the difference between stallman demanding you change the license of something he has nothing to do with, and autodesk demanding you destroy something you legally bought? one is a loveable hippy, the other is a heartless multinational.
I'm not saying that autodesk is good or right or anything like that. I am saying that people need to stop deluding themselves about these things. Buying software, movies, books, etc are not the same thing as buying a loaf of bread, your rights are very very different. If the company is demanding too much, write them an email explaining why you didn't buy their product. If enough people do that, things will change.