Mostly because there was no international coaxial cable and no international microwave sight to sight towers.
But go ahead, try to ‘splain it for us all.
Explain this live TV broadcast from the "Lunar Rover" zoom n tilt shot on Apollo 17 for us. Please.
And DON'T forget to explain the enormous batteries needed for live analog color video streaming from the TV uplink broadcasting Transceivers on the Lunar Rover... from the "moon" to earth!