>>69432
Sorry, all I have directly on that topic is Kinsella, too. But here's two that can help.
First one is Rothbard on scientific research, and how the private sector does a better job at it than the state. Not directly on IP.
Second one is not directly on IP either, but with some transfer, it can help a lot if you want to figure it out. Block talks about externalities, public goods and freeriders and how they're basically a non-issue.
We also had a really autistic thread on here where I tried to relate IP to time preference, but I cannot find it at the moment. It's all a bit drowned out by desperate autistic screeching, sadly. I'm considering writing an essay on what I wrote in this thread, that IP and patents distort time preference and make research profitable that otherwise wouldn't have been, or rather not at the present time.