Pueblo groups had extremely strong ideas about property lines, but those properties were often analogous to modern corporations where individual families could own "shares" in the property, and exchange those for other shares in other properties to reallocate ownership. Areas within a property could also be "rented" to others, or the entire property reclaimed by the government.
The best way I can summarize it is that native Americans tended to have much more fine-grained ideas about what property rights entail than our Western systems. Capabilities based security vs role based security, to really force the analogy into computing.
Possessing of enough military force to ignore others rights would be more historically descriptive.
Even if they had fully understood all the nuances of indigenous property rights, they still would have stolen the land. Confusion was just a fig leaf.
Capitalism has very fine-grained ideas about property rights. Consider corporations, for just one example. There are multiple kinds of shares about who owns what rights to the corporation. Then there are all the contractual obligations that, in essence, transfer specific property rights. There are the web of rights that workers have over it. Then there are the rights the government has over it, via tax obligations and regulations. Layer on the concept of "stakeholders" that layer on more ownership rights.