Could be. I'm sure there may be a few still being kept by people that do not know what they are. Only herpers I know that cruise the Osceola National Forest these days are looking for a now common non-colubrid. And they are plentiful.
I agree about how tough it is finding Kings in Florida these days. My success has only ranged along areas in Southern Florida, ANF and very rarely Payne's Prairie.
I wouldn't say there are no herpers in Jacksonville that are up for the task. It's more like most if not all have no interest in attempting to actually do it. I have to this date never come across a king in Duval Co. Everything else, yes but never a king.
Most local herpers I have spoken with seem to be uninterested in most kings these days. They have nice ball python groups though. Direction has changed for many. But thats OK, as whatever floats one's boat.
A few years ago I spoke with a pair of herpers that targeted these kings heavily. They let me know of some of the areas they would hit but stated "goodluck" as these places have been cleaned out. I only started looking this season but thus far it's been a challenge, then again my timeing was a little off but I still wanted to get into the field 
Duval Co. being the largest (land mass wise) in the Country has as also been a challenge as there are plenty of areas to search. There are two areas I hope to explore later this year when temps cool a bit.
Too bad you are not up here. Would not mind getting some young blood out here in the field. Not being a native does leave me unfamiliar with this area. I like the challenge though. If I find any I may have to keep some back as they do seem to be very rare these days. From what I recall very large and nice looking to boot.
