the.com/owner
The person reality bills when the thing breaks at 2am.
means Someone who holds legal title to a thing, with the rights to use it and the duty to deal with its consequences.
from From Old English agnian, to possess, rooted in agen, one's own — the same source that quietly gave us own and the smug glow of ownership.
Legal weightOwnership means rights to use, sell, exclude others.
Bundle theoryLawyers call ownership a bundle of separable rights.
Not possessionYou can own what you never physically hold.