You need to manufacture a widget and it must cost no more than $5. You have a few inputs to your widget, some made with steel and some with plastic. If steel and plastic prices increase, your inputs cost more than $5 and you’re making a loss on every widget you sell.
So you go to the futures market and take a bet that the input prices will increase. If you’re right, you win $, which makes your widget manufacturing profitable and you’re still in business. If prices fall you lose the bet, your profits are lower. But hey, at least you’re still in business.
A responsible, well run manufacturing business benefits from the existence of such a market because it allows them to de-risk.