Aviation has grown at c 6% per annum since the 50s. There have been bumps in this, and some huge bumps - 9/11 and later the financial crunch, with Lehman's demise at its peak are the 2 most recent big bumps.
During/after the big bumps, lots of gurus said "it will never be the same again".
After the bumps, Aviation continued to grow at its normal rate.
However, this Wuhan virus is an even bigger bump. Will Aviation recover? Yes. And the old growth rates will resume. ...................As long as some of the Majors can survive a year or so of very limited cash generation.
So, my optimistic spin is that by 2022, Aviation will be growing strongly again.