Title. Byproducts like soybean oil, soy milk, lecithin, etc are in nearly every processed/premade food or meal, it’s in a lot of cosmetics. Why?
Easy to grow. Low inputs, water. Doesn’t need to be high quality, since a majority is for animal feed. GMO giant Monsanto targeted it as one of the first seeds since it gives them really high acreage.
It’s the same reason palm oil and soybean oil are cheap fillers from almond milk to chips.
You make more $$ by adding cheapest ingredients.
High quality, non-gmo organic soy is relatively expensive and for human consumption only.
Because of corn and money. Corn takes a lot of nutrients from the ground. Soy is planted in corn field every so many years in order to put nitrogen and nutrients back in the ground so corn can be grown again. Can’t just throw it away can we?
Human is very good at using what we have to create something else.