Earlier quoted context omitted.
This really can't work. They'd get unscrupulous people taking phones they sold back, or a couple who broke up where it's not clear who "owns" the phone. Nobody wants to put himself in the middle of these things.
I do not agree. Apple could play the go-between. They could alert the previous owner that the device has been found, and provide a grace period where a user could request return, for a fee, including Apple's S&H, and a finders' fee for the reporting agent. At the expiration of the grace period, Apple could provide a device reset code.
HNers go on and on about big brother Cupertino all the time, but ooh some (well intentioned but misguided) refurb/recycling shop writes an article and all of a sudden critical thinking goes out the window.