The “acting responsibly” part costs money in labor, if you apply it to the parts of the supply chain that really matter. This is just another way of arriving at “raise food prices”.
It has to have some cost or we’d already do it. Right?
Recovering waste in production and transportation is labor costs. If it were cost-effective, they’d already do it. Recovering waste at the grocery stores costs labor and/or loss of sales in excess of the cost of the risk of waste. Same at restaurants. Again, if it wouldn’t cost them more to avoid that waste, they already would.
Admittedly, at home, it’s mostly a time cost, but good luck convincing people to spend even a couple more hours a week in the kitchen and meal planning and pantry organizing to save small amounts of money (and really cutting home food waste takes a lot more than a couple hours a week)