You intervene. Aware creatures eating each other is just a hack the universe needed (apparently) to get energy flowing into more and more complex, intelligent organisms. We can and will, given time and non-self-destruction, figure out a way to get all our energy from non-living sources (given some definition of the word living). With that kind of power, perhaps we could end warfare in general in our sphere of influence.

Although it is undeniable that there is a vast beauty to the living systems on Earth, that doesn't mean there couldn't be something more beautiful and alive... without so much... digestion.

The point is we can have everything we currently have without resorting to that torture (killing of cows and pigs in slaughterhouses, de-beaking of chickens). Thats what I am trying to eliminate or abate. Animals preying on other animals is natural, and also something they cannot avoid.