Completely anecdotal, non-scientific evidence, but something I keep thinking about...
Ten years ago...
Cell phones were just beginning to catch on (bag phones, anyone?).
The internet was also just beginning to catch on.
Economy was booming.
Now, the economy is coming back, and technology such as cell phones, the internet, and countless other things have "sped up" our lives quite a lot. Do you think this "speeding up" is going to stop? I think not. As a result, provided a teleport system of some sort isn't thought up, people will fly more. They'll have to. If so, there will be growth. This is my hope and my belief. Hopefully I am right.