You're partly right about this, @hasan87. I say so because their purpose are not only about gaining profit. Companies such as Microsoft, Google, etc., may participate in FX market. Here is explanation by LearningMarkets.com:
Commercial Traders: These traders represent companies and institutions who use the futures market to offset risk in the cash or spot market. For example, a corn producer may short corn futures contracts to protect her profits if prices fall in the near term. This class of trader is not going to be very helpful for retail investors and we don’t pay much attention to them.