Mises supported intellectual property rights, including copyright, as a necessary legal tool in a free-market economy to incentivize creativity and innovation. He viewed intellectual property as a socially constructed right to protect creators' labor but cautioned against excessive or monopolistic extensions that could harm competition and economic efficiency.
Rothbard opposed intellectual property rights, including copyright, as state-enforced monopolies that interfere with the free market. He argued that ideas, being non-rivalrous, cannot be owned like private property. Rothbard believed intellectual property could be protected through voluntary contracts, without state involvement, in a truly free market.
To say on topic:
Mises: Likely supports copyright for AI-generated art if the human user contributes creatively (prompt, modifications).
Rothbard: Opposes copyright for AI-generated art, as he believes intellectual property should be based on human labor and not state-enforced monopolies.