Alas, too much of US policy is based on the oil. In an ideal world, we could encourage democracy without forcing it upon those not wanting it, or not ready for it. In an ideal world, we should put the economic, cultural and political well being of the people of Saudi Arabia up there in importance with the cost of oil.
Correct me if I am wrong, but it seems as if you are saying it is the fault of the US that the Saudi people are under the thumb of the ruling house.
It is not.
It is not our place, or responsibility, to win freedom for the people of that country. You can't just give freedom; it has to be earned.
If they don't like the house that is in charge, let them revolt and change their form of government.