I'm looking at it from a technological perspective, not a cultural one.
There are many plant species that grow in other areas, which need their own green revolution. There are perinneal crops, with far better yields than annuals. Food could be grown in ways other than monocrops, for bulk harvest.
Our food systems are industrialized, centralized, and outdated. They are petroleum based and expensive as heck, and geared to produce garbage food for mass distribution that is killing us.. We add sugar, salt, and fat to foods to make it palatable, but the food itself is refined carbs for shelf stability and consistency. The price of growing and harvesting food is a fraction of the sale price. Less than 20%. The rest is moving it, packaging it, advertising it, and retailing it.
Eating well for most people is simply not economically feasible.
Do you think people will care if their twinkies are made with lupin flour and fat and erythritol, rather than wheat, and fat, and sugar? I don't think so.