"The argument against IP does not rest on being anarchist or even anti-legislation. It simply rests on the assumption that property rights in scarce resources are a good thing. Once you accept this, IP becomes impossible to justify. You cannot have both: property rights in scarce resources and IP. Rather, you can have property rights in scarce resources, but not allocated according to Lockean-libertarian principles (first-appropriation and contract). You have to introduce a new ownership rule to implement any form of IP, one that takes property rights in already-owned scarce resources from the libertarian owner and transfers it to a third party, just like any other socialistic welfare redistribution scheme.
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