That's likely untenable for food companies because it means disclosing their recipe.
I'd rather know what I'm eating and not have greedy CEOs pinching their pennies of profit like they're guarding the Krabby Patty formula, because they're scared someone else will learn the generational secret of how to make (checks notes) strawberry jelly. Trust me, the economy will survive if Smuckers tells you how much sugar you're eating.
“Natural flavors.”
I doubt you can’t reverse engineer those fractions from a product and ingredient list anyway.