Apple leaks and patents suggest that they're even aiming to have distributed location recovery, e.g., you lose your keys in a store and turn on 'find my keys', some random person's iPhone detects them and pings Apple, and Apple pings you with the location.
I guess it depends on if UWB devices can detect the location of beacon devices regardless of whether or not they specifically integrate with the "finder device"'s manufacturer. IE would Toyota and others have to add some code to work with Apple's chip, or can every device find other devices in beacon mode? (Another hurdle is if Apple limits what you can do with the chip as a developer, since they've done this for their NFC tech)
Tile does it, but it's essentially an active beacon, which isn't really privacy friendly as it allows your movements to be tracked. Apple's innovation here seems to be doing it in a privacy friendly way https://news.ycombinator.com/item?id=20129942