I don't think that industrialization, the act of exploiting the scale of a demand for a specific item to produce it en masse is inherently unsustainable. In fact, I'd counter such an argument with the following hyperbole - every baby step away from industrialization is one more unfed baby. Efficient food production is what keeps a lot of people, of all sorts mind you, able to eat. Quite literally. Obviously, the food industry is notorious for it's wasteful practices, and that just means that there's room to grow. I sincerely wish you to read about the absurdities of food shortages in the USSR and re-evaluate your opinion on industrial food production.
And speaking of sustainability, what does this term even mean in this context?