As radio firings go, Cisco Cotto’s was one for the books. Just after finishing his midday airshift one Friday last July, Cotto was summoned to meet with his bosses at WLS-AM (890), the Citadel Broadcasting news/talk station where he’d worked for eight of the previous 11 years, first as a news anchor and reporter and more recently as a talk show host. There he was told that even though his ratings were excellent and his show was consistently profitable, Cotto was being let go — effective immediately — to make room for the duo of Bruce Wolf and Dan Proft,...