Really? MLB is selling audio subscriptions here:
MLB Audio | Listen to every MLB game live
$20/yr for MLB Audio or $3/month.
Different team, I know, but for example: I can't listen to the Cubs without having an MLB subscription -- the MLB app on my phone won't play the game audio without an active subscription. I can't listen to the games on WSCR via the Audacy app as I'm not in Chicago, and the local affiliate here in Madison (WTSO) does not stream the games on the iHeartMedia app, either.
It's my understanding that stations can work out deals to stream to geo-located users (if you're in their local broadcast area, you can listen online), but out of market listeners get other programming.