Worst case scenario, the last thing we will be worrying about is aviation.
For some of the Middle East - yes; for others not.
Fund Rankings | Sovereign Wealth Fund Institute
Look at the major players - most countries that don't even know what 'democracy' means.
Oil is a major player - but there are other commodities in there too and these funds are now investing in other areas to, as people have said, dversify their product.
I doubt we'll see UAE/China's bubble burst. Others are a different story...