I think we have almost "fully ethical meat" now - engineered from tofu and other plant material.

ps. Im by no means a saint in this regard, but I have moved to soy milk and eat much less red meat generally, both out of self-interest for the health aspects, but also partially as I think its better for the environment generally. I suppose I should give up chicken, but its a habit hard to break in my social circle. My point is a gradual move by degrees is still improvement, when integrated over the whole population.