IP shouldn't exist at all, ideas are not rivalrous & person A should not be able to dictate what person B can do with their own physical property just because person A publically filed dibs on a certain pattern of arrangment first. Without active govt enforcement there would be no real IP anyway. But wealth earned belongs to the person who earned it & they are free to leave it to whoever they please, because it is theirs to give away. It would require active & violent efforts to seize & redistribute things from heirs.
IP is one of the things I think Ayn Rand got wrong. She also contradicts herself when it comes to advocating non-aggression while also supporting the idea of a night watchman state. Without taxation there is nothing to distinguish a govt from any other voluntarily supported service or charity that must compete for customers.