People pay to listen to the radio. Guglielmo Marconi is kicking himself for not thinking of that.
Spanish language, Asian languages (Chinese, Vietnamese, Korean), and Middle Eastern tongues are filling up the airwaves on AM and sometimes of FM. Rock (old and news) is a dead format in FM radio. It's been replaced by Tejano and Rap.
Some people are expected to pay for radio, other formats fight for audience share among those who won't pay.
It’s kind of like the 1990s when Viacom took their “classic” sitcoms and police dramas out of syndication and moved them to TV Land, Turner did the same with his television properties, etc. and mass audiences ended up paying monthly to watch the same reruns they used to get for free AND getting commercials on their pay-tv.