It is certainly plausible that an a.e. is turning away business for the tiny progressive talker. For one thing, their budget may be set according to performance on the bigger stations. For another thing, they might not want to antagonize their conservative-talk-radio-loving boss by spending too much time and effort on it. For a third thing, if the just-starting-out-tiny-AM is commanding single-digit rates per spot, it may seem like dollars' worth of effort to chase pennies.
This is one reason why we need a "middle class" in radio ownership again. Small enough to try new things the big boys aren't doing; big enough not to collapse as a business if it takes awhile to make something work. I think "middle level" owners and stations would serve as a better incubator for this format than either the throwaway Class C's owned by clusters or the throwaway Class D's owned (and sometimes leased out by) hand-to-mouth operators.
This is one reason why we need a "middle class" in radio ownership again. Small enough to try new things the big boys aren't doing; big enough not to collapse as a business if it takes awhile to make something work. I think "middle level" owners and stations would serve as a better incubator for this format than either the throwaway Class C's owned by clusters or the throwaway Class D's owned (and sometimes leased out by) hand-to-mouth operators.