Likely true about FL and the old Class I-A clears, not enough population back in the day. But with "three-toes" that wasn't the case...case in point: KMA, Shenandoah IA, population in the 20s probably not more than 7000, and ten miles east of there was KSO, Clarinda IA about the same size.
KSO moved to Des Moines, changed to KGGO in the 80s which was KSO's FM sister, then in the early 00s became KXNO. KMA remains in Shenandoah, still owned by descendants of nursery and seed man Earl May.
(TMI mode on: KMA wasn't even the first station in Shenandoah, that honor went to Earl May's competitor in the nursery and seed biz Henry Field, with his KFNF, which is now a Family Radio repeater as KYFR. TMI mode off)