Cows don't really exist in the wild. I guess we could have some in zoos but we mostly keep animals around that have a purpose for us.

One could make the argument that evolutionarily speaking, being domesticated (usually then eaten) by humans is the most reliable survival strategy for any species.

I think it was just a joke to rile up the vegans.

Right, but those animals aren't as naturally helpless as a domesticated cow.