It's worth pointing out that this isn't some hypothetical. Kangaroo meat is available at most grocery stores and butchers, it's fairly cheap, and quite delicious. It's the red meat I buy most often.
It's also worth saying that kangaroo in Australia is a bit like deer in the US: city people think the animal is a bit magical, country people think it's a bit of a pest; some people hunt it for food; you can buy the meat in some butchers but it's not in the diet of most; and occasionally it's culled because of population explosion. The only real difference is that the deer is not a national symbol.
I know peers who get excited when we go for drives outside of the city limits, so they can see a Kangaroo. I get stressed out driving the car out of the city, because if you see a Kangaroo you're likely to run into it at a hundred k's an hour. They are a bit of a pest in the numbers they've expanded to.