Looking at the list, again, I notice that Philadelphia is the 4th largest TV market. I could not find Las Vegas at first...but there it is at number 42. A respectable Athletics could find fans in Philly if Fisher would sell to someone willing to spend closer to what the Phillies owner spends.
And Northern NJ could support a team, although the Yankees would fight. When I lived there in the '90s, I saw Yankee hats everywhere.