I think you seriously underestimate the proportion of domesticated animals in the overall ecosystem. Because humans have grown to numbers that are much much lar

I think you seriously underestimate the proportion of domesticated animals in the overall ecosystem. Because humans have grown to numbers that are much much larger than any other mamal of comparable size (largely due to industrialised food production), numbers of our domesticated animals are also much larger than what would be sustained in a normal ecosystem. Here is an illustration of this https://xkcd.com/1338/ https://xkcd.com/1338/