“Sorry, but the speculators have grown to such a volume that they can alter prices independent of demand.”
Add “or supply” and “for a very short time” to your sentence. Also, the big boys hedge their bets, lowering price volatility. Speculators are a positive for the rest of us, including me, a small time speculator.
What do you mean, 'us' - those stuck paying $4+/gal for gasoline? Those in other countries who can't afford to eat?
There are solid reasons for curbing speculation - namely to prevent the chaos uncontrolled speculation causes.