Are you suggesting that the Washington Nationals is a bigger market team than TEX/PHilli? Really? you are confused with the term dude. Take a look at the definition.
Nobody is disputing whether they have money to spend or not. They are not a big market team according with the definition. They are not a big media market team. Nobody gives a s*** about the Washington Nationals; DC/US/Global. Their fan base is limited, even in their hometown. Buy advertising in a Nats game is not attractive since nobody follows them, Hence the broadcasters do not compensate them as they do with NY/BOs or even Philli or Tex. Hence, their media market is limited in both domestic and foreign. Hence they are not a big market team. It is conclusive.