What, you want to put FACTS into the discussion, Aaron? Don't you know this is
radio-info?!?!?
Entercom doesn't have that many big talk AMs to compare. Probably the closest comparison was in Seattle, where Entercom had news-talk monster KIRO on 710...and then traded it to Bonneville and got out of the AM business there entirely. OK, maybe that's not a great comparison.
In Greenville, SC, they added an FM simulcast for their two fairly weak-signalled news-talk AMs - but they had an FM with a failing format available for the purpose.
In Kansas City, Entercom has KMBZ 980, one of two big news-talkers in the market, and KCSP 610 (ex-WDAF), one of two big AM sports outlets in town. So far, KC has been a fairly healthy AM market, and there's been little to no pressure to move these behemoths to FM.
In two smaller markets, Entercom has aggressively moved its news-talk presence to FM simulcasts: WWL New Orleans and WILK in Wilkes-Barre/Scranton.
Entercom strikes me as a company with a lot of local autonomy for its managers, so it's hard to read a lot into what they've done in other markets that are quite different from Boston...