I think most of what you said here is very correct about usage, but your last point is inaccurate. Here are the facts.

Over the last 10 years:

The various state governments has required more boutique blends of Gas, this costs the oil companies far more to refine.

We have not built a refinery in about 25 years, in the mean time US demand, thanks to all those lovely SUVs has shot up tremendously.

The Indian and Chinese economies have gone up in vastly in size, with both countries consuming far more automobiles than they use too. This means more pull on world gas supplies.

A great deal of the world's oil supply is controlled by people who should frankly be locked away in a mental institution. This puts the fear of God into speculators. Who have driven the price of oil through the roof.

As for the oil companies themselves, well when you factor out the raw cost of the oil, refineries, transport, marketing, and taxes, their take:

15 cents per gallon,

which by the way is a lower profit margin than Walmart makes on most things it sells.

The federal goverment gets almost three times money in taxes out of that same gallon.

So who should you really be angry with?