shulmahn has given a good snapshot of the supply and distribution scenario as regards gasoline. Incidentally, Reeder, in the U.S., tobacco, alcohol and income compete with gasoline for what is most heavily taxed. European gasoline is another matter (very heavily taxed).
Nobody controls the price of oil.
Companies such as Exxon Mobil, Shell, BP, ChevronTexaco and TotalFinaElf together account for less than 15 per cent of world crude oil production.
The Organisation of Petroleum Exporting Countries (OPEC) - effectively made up of state-owned outfits such as Saudi Aramco and National Iranian Oil Company - is a far bigger player, with about 40 per cent of world output.
But even OPEC has had only limited success in forcing prices up or down. This is because:
1.) Their market share is large, but not dominant - there are significant non-OPEC producers such as Mexico, Norway and, in the news most recently, Russia, who follow their own agendas (OPEC has recently said they will only cut production if the major indies do as well, and Russia has said they’ll only cut 50,000 BOPD as opposed to the 150,000 BOPD OPEC asked for),
2.) Aside from supply and demand, crude oil prices are determined by unpredictable factors such as the general health of the rest of the economy, weather, major political events and market sentiment,
3.) The largest consumer, the U.S., produces ~45% of what it consumes, and every year +/-95% of wells drilled in this country are drilled by independents of whom most people have never heard, and who couldn’t control the price if they tried, but who definitely influence it with their aggregate production, and,
4.) Market dynamics continually change - Asia, South America and even Africa consume far more than they did 20 or 30 years ago, but have undergone economic swings that can dramatically affect their consumption, and thus world prices, rapidly.
Their are multiple varied inputs into the price of oil that no one and no group of people can ever expect to control.
And if you compare the price of gasoline today versus 20 years ago with almost any other consumer product you can think of, gasoline is cheap, even at last summer’s prices.