I was reading the other day about this early libertarian theorist, Andrew Joseph Galambos, who was unique in that he took libertarian absolutism regarding private property rights and applied them to intellectual property as well, arguing that ideas literally belonged to their originators, so much so that they could charge others for use. But this maximalist view of intellectual property made it so that virtually no one ever heard what he had to say: you could only learn about his ideas by paying to see a lecture or a tape of his, and all viewers of those had to agree to a non-disclosure agreement against publicizing their contents. So his followers couldn’t ever actually tell anyone about what he had to say, they just had to reccomend people pay for an overpriced lecture video they’d never heard of. As a result, he’s almost entirely forgotten about today.
Libertarians have largely turned against the idea of intellectual property protection since then, and he wasn’t even too popular at the time to other libertarians outside of his following, but I still love that: his ideas for how the world should work were so bad they literally made it impossible to tell anyone else about them, thus dooming them to irrelevancy
