A number of the airfields I visited in Florida seemed far more integrated into the local community. They encourage people to set up business on the airfield, using the available land more effectively and not necessarily aviation related. The community benefits in terms of the employment that this generates. This in turn leads to further investment of time, money and the kind of goodwill found lacking arround many of our more introspective airfields. The airfields are often seen as an additional link to the outside world and part of the transport infrastructure.
The fact that flying is considerably cheaper, within the reach of more people, and, in the case of places like Florida, helped by the weather, means a higher level of aircraft movements. More movements = more fuel sales & more flyers taking advantage of the facilities. This in turn creates the viable market place for someone to run a cafe business.