Not sure if you were responding to my post, hildea, but I have no quarrel with the idea that various sorts of IP should be treated differently from each other, and differently to the various sorts of other property. The law has different provisions for different sorts of property, tangible and non-tangible, because the social objectives are different.
But treating them differently or the same is a deliberate choice. In feudal times land ownership remained with the monarch and fiefs would be granted to vassals giving them specific rights (trading rights, farming rights, hunting rights). Sounds familiar. Now we have land ownership defined in law, but eminent domain still exists. So all property has a lot in common, whatever our modern assumptions, we just choose to treat them differently.
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