Reading reviews (for Samsung Smart tag), it feels like the most frequent use case, by far, is air travel. Tags allow to track luggage, fairly accurately, in near real time. One review mentions being able to retrieve apparently lost luggage that had been left away from the carousel. Others claim that you can track the luggage from the tarmac to the carousel. Since a lost bike is certain to ruin a trip, perhaps useful to have tag to let you know that your bike is at JFK while you are at SFO. Could speed up recovery.
That, in and of itself, could be enough to justify the expense. Still undecided...