For many oil-exporting countries, a high percentage of state funds comes from rent, with oil exports consisting of a large percentage of that rent. In this context, rent is considered "income acquired by states from sources other than taxation" (Gelvin 1). For example, Saudi Arabia obtains 90% of its state funds from oil exports, Kuwait 94%, and Abu Dabi 95% (Gelvin 1). As a result, oil perpetuates these countries' indifference to their citizens' needs, as seen so clearly in the novel, where the autocratic emir is completely indifferent to the plights of his people—even as Miteb voices the concerns to him directly—and is completely self-absorbed in increasing oil wealth and personal ambitions to grow his political power and army. In a way, the microcosm of The Cities of Salt maps onto the macrocosm of many conflicts of oil such as the Gulf War, the Oil Crisis, and the Iraq War. Even in many modern Arab states, such as Saudi Arabia, who spends the largest percentage of its GDP on its military, making it the fifth most expensive army in the world, does so with largely oil revenue and at the expense of social infrastructure in many of its rural, desert communities.
The story starts off from the lens of Miteb al-Hathal, the patriarchal figure of the poorest and proudest tribe of the Wadi. Although protagonists' class of the pre-oil era could be considered as low class, within the tribe, it was largely egalitarian and many were content with their lives. Of course, there were the sorrows and pleasures that accompany any life, but in the post-oil era of the novel, it's clear that their lives did worsen. What needs to be understood is that how content one is is not directly proportional to the material wealth that one has. Even as the livelihood of the people of the Wadi did not materialistically decrease by much, the injustice, mistreatment, and segregation, coupled with the ability to see just how rich you could be by observing the Americans in their camps would have a huge negative impact on the overall subjective wellbeing of the Wadi people after the sudden transition into a modern oil-powered city.