Many RV parks sold out ten years ago to condominium because of the higher density they had. This is especially true of SE Fla over SW Fla where there are even new parks being built. The only two newer RV resorts on the SE coast is Outdoor Resorts St. Lucie West and Aztec in Broward county. Pretty sure Aztec is a old CG that they have completely redone.
Even when a park goes ownership, there are still sites to be rented, but not as many. After the downturn of 08 things are finally coming back and prices and rents are going up. Supply and demand.