Why is the market smaller than in the 60s? There's more people with money than ever.
It’s the doctor segment that is probably way down, or holding steady.
I wanted to be a pilot. I took lessons in the 1990s at a small field, relatively uncrowded, relatively low cost. I stopped due to weather/money.
When I tried again after I finished college where I lived things were more expensive and the airspace was so crowded you would run up costs waiting in line to take off, and the whole thing was much more stressful.
It has to be fun, in a busy enough environment it becomes stressful enough fewer people want to fly.