Yes, but most large food companies aim for consistency far above and beyond legal requirements to foster brand recognition. That’s why commercially made and canned soups without them exist, they’re just not nearly as widespread.

There’s a restaurant in my town that serves totally different dishes in house, but they also have a vending machine that sells canned jars of soups, curries, and stews; and you can find them in some of the local grocery stores. The ingredients are basically the same as the ones I’d use at home (though probably with a lot more salt and fat), and they’re perfectly safe and legal to sell.