What do you think when you say ownership?
I think - "this is totally mine. Nobody else's. I can do with this what I want. It is entirely up to me."
Do you own your passport? In fact, you probably do not. Most passports have a page stating to the effect that "this passport remains the property of <relevant authority>".
DO you own your device? I feel like I own my devices. I will defend them from theft, or loss. Because they are "mine". But ownership in a broader or legal context implies more rights that I don't think I have. I don't own the IP to the hardware and software on the device. These components have licenses to which I agree and am bound simply because I possess and use the device. These contracts restrict the things I am allowed to do. So my "ownership" also comes with certain "responsibilities" - which I personally don't believe I ever think about. But they exist.
For instance, probably somewhere in these contracts something is said to the effect that I cannot reverse engineer, reproduce and resell components or plans for these components. And myriad other things. Designed to protect the business and investment and people who invented and built them.
"Ownership" in the age of complex "finished products" that result from trillions dollar global supply changes of incomprehensible complexity is more nuanced than the idea that I found a log in the forest, and now the log is mine.