I think
 the only reason it survives is that most of the population isn't
 really aware of its existence.  If they knew about it, they'd want to
 close it down.
Well, I think you're wrong.  I use my (small, but sometimes effective) 
bully pulpit as an AOPA Airport Volunteer, founder of our airport's 
advocacy group, and owner of an aviation themed hotel to tell EVERYONE 
about General Aviation in my neck of the woods.
So far, it's only had positive results.  I think public is generally 
ignorant of GA -- you got that part right -- but I think your 
predicted results are wrong.
The more people know about the affordability, freedom, and sheer joy 
of personal flight, the stronger GA will become.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"