I would say it already does to some degree. We choose to not eat certain animals like dolphins, but happily eat fish. Society determined in very informal terms

I would say it already does to some degree. We choose to not eat certain animals like dolphins, but happily eat fish. Society determined in very informal terms that they are more sentient than fish and therefore they should not be eaten. I would also like to say that I made the 'line in the sand' point for arguments sake, and that I personally think it is a spectrum.