Use the soy we are feeding cattle to feed humans directly. Cut out the middleman - lots of resources freed up all of a sudden.

Keep subsidies to beef low and increase subsidies for plant protein (peas, beans, soy).

Encourage healthy plant-based diets all over the world.

Profit from the vast areas saved to start reforestation projects.

Why not tax meat into oblivion?

That would possibly be a solution, but alas I don't think it's going to happen anywhere soon.

You mean convince people to stop eating meat?

It's already happening. At least in germany the number of vegan meat alternatives has exploded.

These used to be niche products, you could only get in specialty stores. Now there's whole supermarked isles dedicated to them.

The solution is pretty simple.

Stop subsidizing meat and diary farmers. Stop their lobbying, which results in ridiculous laws like the ones in the EU, where you're not allowed to call Almond-milk Almond-milk, because the diary lobbied for "milk" to be a protected term.

Put that money into vegan alternatives, and people will buy them automatically.

There is limited progress in terms of store representation, but it's not nearly fast or complete enough. It has to be mandated to stop it because there are too many "no mask, anti vaxx" people who will never stop using it like sugar of lead, DDT, asbestos, PTFE, or leaded gasoline.

"Almond milk" grow of almonds is a waste of water in water-scarce areas. Also, compounds in almonds bind to testosterone. It's a very wasteful product.