Avis tried this, too. You can still see some Cherokees with N numbers ending in AV. I'm guessing the high cost of insurance had something to do with the demise.An outfit called "Lease-a-Plane" tried this about 30-35 years ago. Not enough folks were interested to make it fly on its own, and local FBO's saw little to gain by joining the network. It died after a few years.
-Skip