Cannibalize meant in this case to have product that will kill one of your other products (in this case the back then cash cow iPod would be killed by the iPhone).

I don't see this in Tesla.

The Y and 3 do everything the X and S do. I don't see how they could keep making them without eating away sales.

Not really. The Y doesn't even come close on towing capacity.

But the CyberTruck does, though it is an entirely different segment.