There is no economic model that can support the state buying Wrigley Field. The sports economists have to pay some attention to this one. It all stinks to me of political gambit. Heck, Wrigley sells out most games, and that’s even when the team’s having a crappy year. I am not persuaded by the argument that Wrigley’s renovation requires so much capital that it exceeds the levels of private investment that a private owner can undertake.