yeah they have a higher total number of people in absolute poverty(the worst kind of poverty) than India despite having 1/6th the population of India. The thing is this does not seem to be improving as they are still very much in their population growth stage with TFR above 5 children, so expect a lot more people in absolute poverty.
They might already be having. The case with small proto/non industrial developing states like Pakistan, Nigeria, Bangladesh, Myanmar, DRC, Afghanistan, Somalia and Yemen etc. is that they don't have absolute demographic and economic data of their populations.
Their GDPs and populations are just "estimated" numbers.
Also, they get a lot of their gov revenue from oil, the proceeds with which they did not utilize in the most efficient way relative to the arab oil states. at least in the arab states, they are stabilizing in population and the infra and service have improved to first-world European status even though the quality of human resources, R&D and manufacturing, and other industries are pretty mid or bad.
Arabian landmass was just a RELATIVELY settled civilisation and less nomadic/tribal in nature than African ones.
It is the case that countries with a culture of settled life in Western and Eastern world are either rich or catching up fast.
Even Arab world without oil, sucks at innovation, ranks low at economic complexity and will be left behind South America if not Africa without oil.
So a civil war along communal lines is possible you say
What would you place your bet as the sparking point
Distribution of wealth between religious groups. There's a good gap between richness levels of Christians and Muslims.
Can't say though. Even with instability and hostilities higher than levels of India's neighbouring countries, decades pass without civil war.