This is just not true. Supply and Demand doesn't effect the price of electricity, food and water, or fuel. All of that is set through cost versus profit ratios and heavily regulated to prevent shortages or abundances from fluctuating the prices. Electricity is regulated by the EPA and the Department of the Interior. Food is regulated but Federal law to maintain stability in price. Water is essential the same as food. Fuel, the only determining marker for that price is the Futures market, and every prior fluctuation before it hit's the pump is already priced in.
The largest influences on the cost of all of these are inflation and taxation.
I don't know what planet you live on, but it does. A lot.
This is why cost of living varies by location, some places have either more supply or less demand or easier access to utilities, and those places cost less to live, UNTIL POPULATION GROWS THERE.
Fuel, or specifically, gasoline, is HIGHLY dependent on demand, though not directly from the consumer pump. Either way, utilities, gasoline, food altogether make up less than rent or mortgage, if not less than half of it. I dare you tell me that cost of rent and mortgage is not supply vs. demand dependant.
Even inflation is a supply/demand factor, inflation means dollars increase, and the value of dollars decrease, and therefore prices go up. Inflation doesn't happen unless people are given or loaned more money, which is increase of supply of money, and increase of demand of goods, both lead to higher prices. Taxation too is a money supply influence, which is in turn, a supply and demand influence on commodities