Commodities buyers don't care who's corn is ethical or who's corn is unethical. They don't care who's ground beef is manly and who's isn't. It all comes down to cost per results at the end of the day. Resource usage is just a part of that calculation. No different than the cost of shipping.

If McDonalds and Walmart can cut their existing beef with fake plant beef or lab beef without hurting their bottom line (by making their products less attractive to consumers) they will.

Will there be people who try and capture the high end market with some ideologically themed marketing in the meantime? Of course. But make no mistake, the long term goal for these new synthetic meat (both plant meat and lab meat) producers is not the high end market. It's the thousands of reefer cars that put that house brand 80/20 on a store shelf near you. Pandering to whatever the premium consumer wants to hear until you can make your product cheap enough and good enough to make real money is just a necessary part of bootstrapping that.

Putting the McDouble back on the dollar menu with the help of synthetic beef is what societal progress looks like.