Every analysis that I have seen says that when you look at it objectively building stadiums is a losing proposition economically. Here are some links
[link|http://www.cascadepolicy.org/cctext/2001_11.txt|Play ball, Portland!
But fund it yourself]
[link|http://216.239.39.100/search?q=cache:ERLSgPA1v7gC:www.cato.org/pubs/regulation/regv23n2/coates.pdf+%2Bstadium+%2Beconomic&hl=en|The Stadium Gambit and Local Economic Development]
[link|http://www.heartland.org/studies/sports/sports-studies.htm|Sports Stadium Madness: How It Started, How To Stop It]