"But the industry says that oil prices fluctuate widely over time and that, in the long run, it's actually less profitable than a number of other industries."
Of course they say that, and of course it isn't true. The numbers don't lie.
With OPEC and the oil companies, each gallon of gas is overpriced by atleast $1.
It would be awesome if someone found some perfect alternative to oil and killed the oil companies and opec. I know it won't happen, but it'd be cool.