Yes, this is absolutely correct. AND! With the newest Wizsense cameras, the static cameras can alert a PTZ and start it auto-tracking. So, if I had a 2.8mm wide area camera covering my whole garden, or even the garden gate (which is maybe 30-40m away), it would detect movement at the gate and that would be good. I’d get an alert. With the new cameras, the TiOC can tell one or more linked PTZs to move to a preset position ie. the garden gate, and do human or vehicle detection. Once they lock onto the specified target, they track that body until it stops moving or it moves out of their field of view. And because it’s zoomed in, it’s a nice big clear image of the person or vehicle you’re looking at.
It’s properly clever, and it works the way an operator in a control room would. Only it never sleeps and it very rarely gets the tracking wrong.
In general though, I would absolutely agree, just saturate the area with static cameras and leave the PTZs for town centres and football grounds.