Consumer choices are only going to get you so far

True. Review on it from two years ago here: https://www.sciencedirect.com/science/article/pii/S221479932...

Might be worth shifting subsidies away from meat and towards plant protein to a level consistent with the social cost of carbon, but one could probably expect resistance from a certain demographic, maybe loudly exclaiming on social media that it's a secret government plot to emasculate them or something. (and opposition from industry groups as well probably)

I didn't say it would need to be restricted to individual choice. It could also be a political action from top down.

And so will regulatory solutions so long as we have different states competing for resources.