I just finished saying something along the lines of this in the Atlanta forum ...
Enjoy these stations while you can. The Oldies/Standards format is on its last legs, because it largely appeals to an older demographic which is literally dying off. The only stations where it works are ones like this, where a local owner has built up a loyal audience and can use that loyalty to sell local advertisers. Still, these stations are for the most part surviving on the edge financially, and thus there's no incentive for owners to create "more like them".
A standalone AM with no translator is an endangered species now, and it's very likely that WABF and its sister station WERM (diplexed on the same towers since 2017, the real estate value of tower sites having become another factor for a lot of stations) are staying afloat by following the "loyal audience" sales model. I note that WERM apparently still runs an urban Gospel format, which I imagine also has a loyal following, and that certainly helps the overall strength of the pair. (As I understand it, these are the only two stations under the current common ownership, and neither has a translator.)
But there is still a limit as to how long it can last, and it's certainly not a situation that anyone starts from scratch to emulate.