So, while I really enjoyed the article,the author is clearly on some excellent pharmaceuticals. Airlines make changes when everyone else makes changes. And none do it if it won’t generate revenue.
The answer is probably somewhere in the middle. My wife and I live in an urban area and I travel quite a bit for work. We could certainly go to one car and I think this is likely the first step. A traditional American 2 car family (or more if you have a kid driver) going down to 1.