This column from a veteran radio consultant is a bit odd - it suggests the best way to save over-the-air radio is not to promote over-the-air radio at all. Instead, almost everything should be promoted and broadcast online, which kind of defeats the purpose. 

It may not surprise you that at the end, he gives the big reveal - all the advice was generated by A.I. on how to save the medium. Even if it's not on the medium itself. 

Saving Over-the-Air Radio