Deer meet is hard to buy, at least in the US, partly because the US has ridiculous laws prohibiting transportation of venison from US deer across state lines in various ways.

> and they're not raised as livestock

See https://en.wikipedia.org/wiki/Deer_farm#Deer_Farming_in_New_... -- not quite as many of them as sheep there, but you definitely see a bunch of deer farms just driving around.

In fact, in my experience you're more likely to see New Zealand venison in a US store than US venison, because of the above laws prohibiting transportation.