I'm sure several stations in Providence would be interested in carrying the Red Sox. A few examples of dwindling interest in baseball play-by-play might be mentioned, such as the Mets. But I believe many radio stations in New England would find carrying the Red Sox a great way to score advertising. Following the Red Sox is still important to New England sports fans.
Folks above talk about how WBZ-FM Boston gets good ratings in Providence. But WEEI-FM, the Audacy-owned Red Sox flagship, is licensed to Lawrence MA and has its tower in Peabody, about 20 miles north of Boston. So that's why it doesn't cover Providence as WBZ-FM does.
WBZ-FM is one of the highest billing stations in the nation. It's usually around #5. WEEI-FM is usually around #15. That shows you how valuable being a sports station in Boston is! Sports is #1 and #2 in Boston radio billing by far.
And BTW, Cumulus-owned 790 WPRV Providence carries the NY Yankees.