The most effective producers because of non-economic reasons (i.e. geological properties). So they end up being one of the largest investors in the world becaus

The most effective producers because of non-economic reasons (i.e. geological properties). So they end up being one of the largest investors in the world because of geology. The market does often not do pointless or dysfunctional things because markets tend to give most capital to the most efficient users of that capital. But those rules do not apply to things like oil where there are significant non-economic returns (to an extent, the Saudis will always lose all their money, I have named other reasons who repeatedly do the same thing...but it is not terribly efficient spending resources to prise capital from them).