Spotify just handed Joe Rogan another $250 million for a show anyone can watch free on YouTube. Sounds like the dumbest deal in media. Stay with me, because the math behind it is kind of beautiful. This is Rogan's third Spotify contract. The first one, back in 2020, was $200 million to lock him up. Exclusive. Want the biggest podcast on earth? Download our app. It worked, sort of. But locking up the show also capped its reach, and a show with capped reach has capped ad money. So in 2024 they…