There are way more rams than the Yankees who own their own TV Network which broadcasts their games: Astros, Blue Jays, Cubs, Dodgers, Mariners, Mets and Red Sox. Some others teams have partial ownership interest in the network that carries their games.
The Brewers are in the worst media market, hemmed in to the northwest by the Twins, the South west by the Cardinals, the East by the Tigers and the South by the Cubs and Sox. When video broadcast revenue is king, they have nowhere to really expand their local audience and can only try to turn out more viewers in a tiny geographic area