For speculators yes. But for a farmer and the consumer of the goods they would rather lock in a margin for their goods and run their business than risk guessing what the price will be at harvest time or consumption time. It’s called hedging.
And consumers neither lock in margins nor run a business because consumers buy at retail…
Ok charitably, maybe you use “consumer” in a special sense of businesses that consume raw materials such as owners of onion ring factories. In those cases, future prices (as opposed futures prices) are typically negotiated directly into contracts with producers of those commodities…and how many of those are in this thread?
In the vast majority of cases, futures are traded speculatively and physical delivery of goods and chattles is an extreme exception.