I would imagine higher fuel/insurance/operating costs will drive the
trends already in motion. Namely, more shared ownership, less private (1
person) ownership, and either a shift towards owners in a higher income
bracket, or fewer owners overall as the ones struggling with the expense
drop out.

I'm not sure I care about any (predicted) airplane valuation decrease.
My airplane was paid off long ago and I own it to fly it, not as some
kind of investment. I easily put back in its original purchase price
every 7 years or so in expenses and upgrades. The only day it will
matter is when I lose the ability to fly or die. I may get more or less
cash back, but the expense stream will come to a halt. Either way, I
will spend less (or be deceased ).


Good Luck,
Mike