If you can't fix it, you don't really own it.
Doesn't mean that if you can fix it you necessarily own it.
But prove you can fix it before you start blabbing about how you own it.
@rysiek Fair (though this brings to mind various body part replacements, incl. artificial crowns).
Somewhat less in jest, but still nitpickily: there are different kinds of fixing, that bottom up in replacement at different levels (compare: replace an ICE car, replace the engine, replace the cylinder block, regrind valve seats[1]), so being able to fix something is not a binary proposition. In some cases the object itself is simple enough that actually fixing it in _any_ way is very hard (e.g. Phillips screwdrivers).
I get the intent (I think), and I agree with the "we should move in that direction" interpretation, but I don't see how to place a "good enough" bar in a consistent way across different kinds of objects.
[1] I'm assuming without looking it up that valve seats are part of the block, as opposed to being inserted into it.
@robryk not sure I would ever want the term "to own" to be used in the context of my relation to myself.