Add to that the environmental impact, insane water usage, and the fact that meat production will continue to destroy economies through pandemics, and it should cost 10-15x more than it does now.
So I'm curious where that number comes from.
Just like roads. Most people in society want to be able to freely travel where they want and when they want to. So we subsidize roads as a society where the wealthy pay more in terms of taxes but everyone gets to use the roads.
So, we should subsidize things that people like? Should we subsidize sugar?
Most Americans are eating far more meat than doctors recommend.
Who should be the authority for what society finds value in, which policies are invoked, how taxes are distributed and spent if not the representatives of the people? Clerics? Doctors? Lawyers? Scientists? Sociologists? Bartenders?
Currently high quality beef imitations like B-On are not quite cost competitive with real ground beef. Basically it's taken us an additional ~100yr of supply chain growth to get to a technological point where plant beef is priced like beef was 100yr ago.
I feel very comfortable saying that any change that hits the low level commodities that underpin these things, fuel, grain, etc. would just exacerbate that difference and set plant based "transition foods" back.
In a healthy democracy, government's enforcement is mostly a force for good.