Ask HN: Why are iBeacons not popular yet?

I have seen alot of iBeacon companies with cool ideas but never seen one take over. Macy's is still trying to use the ones in their store and RiteAid has one in every store they have. I think bluetooth is better than gps location, saves alot of energy. Heck if PokemonGo used beacons (more logistics i know) maybe it could still be popular than using ur location alway on draining battery.