I’m not sure you understand how this works.
Currently, if you have a tile and it is outside the range of your device then it can be picked up by other people, and the location sent to you, as long as those other people are running the tile app.
The only reason that I haven’t invested in Tile is that I don’t have confidence in there being other such people around. The total number of people that I know who have the tile app running on their phones, for example, is zero.
If Apple get this right then the airbags will be picked up by anyone who has an iPhone (and hasn’t specifically switched this off, I assume). The number of people I know who have an iPhone is, well, hundreds.
For this purpose, apples network is bigger than tiles many, many times over.