"Saudi to transfer airports to sovereign fund in privatization drive" - http://www.reuters.com/article/us-saudi-airports-privatisation-idUSKCN1B125O
As everyone talks about the fall of the Saudi with the eventual fall of oil, it seems the Saudi are not deaf to the comment. The Privatization and development of sovereign wealth funds by the Saudi royal family have picked up and not only ARAMCO but also their own airports are being privatized to diversify their incomes generating assets.
A nation with alot of social spending to support their people with free education, free healthcare and the like, with zero taxes, it seems they still plan on running their country the way it always has but with a new source of revenue, one less dependent on oil and more dependent on investment.
It seems there is no company the Saudi are not involved in, as they have partial ownership in multiple industries.