Yes, it's evidently, demonstrably, the case that ideas have value, because this is enshrined the concept of intellectual property. Even in a world where IP didn

Yes, it's evidently, demonstrably, the case that ideas have value, because this is enshrined the concept of intellectual property. Even in a world where IP didn't exist, his statement would be wrong, because there will always be people who can sell an idea, and the value of something is exactly what someone else will pay for it.