Well it's there for apple things like Apple Pay. There's no real incentive for them to open it up to developers unless they're controlling the space. i.e. for A

Well it's there for apple things like Apple Pay. There's no real incentive for them to open it up to developers unless they're controlling the space. i.e. for Apple Pay it's nice, or say to unlock your car, or unlock your home's door with Home Kit, but random NFC thingies? They're not really interested.