Bill Shaikin makes the case for the government not building ballparks:

The Dodgers hold spring training in Glendale. That city’s costs in constructing, financing and maintaining Camelback Ranch add up to about $300 million. The Dodgers pay $1 per year in rent. So do their co-tenants, the Chicago White Sox.

The economic justification for Glendale, and for the other Cactus League cities that lured teams with taxpayer-funded ballparks: Fans descend upon Arizona every spring, showering the desert with dollars spent on hotels, restaurants, shopping and entertainment.

LATimes.com

The teams don’t care about your generosity. If you want the business, get out of the way and let them build, but let them pay for the parks.