I'm sure we would have heard something about residents of this world disappearing all of a sudden... perhaps not if it was only one or two people, but if it was enough of a problem to make a dent into the actual population density then most certainly.
Yes, it's more about competition than anything... if normal cows, pigs, sheep, fish, and whatnot exist somewhere in a domesticated form, it's not too surprising that they're still around. They have a niche in the agricultural sector that things like Tauros, Mareep, and Miltank can't really compete with, given that they're inedible.
However... well, I can't really claim to know what the ecological balance is in your world, but in this world, it seems as though the majority of Pokemon serve as actual replacements for regular animals, which complicates things. It would be one thing if there were powerful magical monsters here existing alongside regular animals, but it seems more like they are one and the same here.
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Yes, it's more about competition than anything... if normal cows, pigs, sheep, fish, and whatnot exist somewhere in a domesticated form, it's not too surprising that they're still around. They have a niche in the agricultural sector that things like Tauros, Mareep, and Miltank can't really compete with, given that they're inedible.
However... well, I can't really claim to know what the ecological balance is in your world, but in this world, it seems as though the majority of Pokemon serve as actual replacements for regular animals, which complicates things. It would be one thing if there were powerful magical monsters here existing alongside regular animals, but it seems more like they are one and the same here.