Actually Zebra is already offering something in this direction[1], but if you don't need such precision or have way less budget, triangulation with WiFi access points is usually enough (and they're already there for providing network access to the devices).
Then only remains the consumer market, I don't know if it'll be as big as they think it is. But I suppose they already checked that.
[1] https://www.zebra.com/us/en/products/location-technologies/u...