Interesting fact(?) that I heard recently was that the emirate of Abu Dhabi [UAE] makes enough money in 45 minutes of oil production to provide the entire Government spending for the year.
AD still has a fair handful of oil to sell... it's just places like Dubai which are drying up so are focussing on new methods of income...ie turning the place into La La Land.
What concerns me is that these new airplane engines being developed [like R-R Trent 1000 etc] are still fuel-from-oil powered at the end of the day and they aren't looking too heavily into fuel cells/other forms of power as far as I know. If the 787s/A350s aren't coming out for another 3-4 years, give them a 25-year lifespan in passenger service and then another 10 years as freighters maybe, that's another 40 years or so from now, I still reckon it will be a different place [wrt oil, fuel etc].
Interesting topic.