What is an oil company, anyway?

Good piece by Ben Stein in the Sunday New York Times:

So, when gasoline and heating oil prices go up — prices that are set by the markets, not in the Exxon Mobil boardroom in Irving, Tex. — why are we angry at the schoolteachers and retired police officers who own Exxon Mobil and who can now buy new golf clubs?

We can be angry at "them" all we want, but it does not make a lot of sense because, at the end of the day, "them" is us.