Yeah,I remember someone on Reddit posted a breakdown of rough costs for one of those cameras, including operation, data storage and everything and it was pretty astronomical.
the data storage is ******* insane.
Amazon were trialling 8k video streaming in Japan for the 2014 world Cup,
Roughly 2TB of data per minute.
But that's off topic, just wanted to point out that the costs involved aren't trivial, and neither is the implementation.