The answer is it doesn't matter.
I believe it does matter, and your hand-waving/glossing over the definitions and distinctions is just lazy.
"Intangible" property could be defined as property which can be possessed, utilized, interacted with, altered, distributed, reproduced, etc. without affecting another's possession, utilization, interaction with, alteration, distribution, reproduction, etc. of the same (and possibly without another's knowledge).
By this definition, it should be obvious that a digital file differs from a parcel of land or a round of ammunition.
Now, there should be some notion of exclusivity of course, especially when it comes to reproduction, license, sale, etc.
There are probably loopholes in this definition - I just wrote it down for the first time (granted, while having this tab open for a few days). But it's more coherent than just claiming the equivalence of three wildly different statements (a thorough study of, say, mathematics should have trained you not to do this without some serious support).
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