Economists are nearly unanimous in their belief that publicly funded stadium projects are bad for cities, bad for citizens and bad for taxpayers. From a comprehensive review of economic studies:
We have seen that economists in general, as represented by Whaples’s survey (2006), oppose sports subsidies. Economists reach the nearly unanimous conclusion that “tangible” economic benefits generated by professional sports facilities and franchises are very small; clearly far smaller than stadium advocates suggest and smaller than the size of the subsidies. The fact that sports subsidies continue to be granted, despite the overwhelming preponderance of evidence that no tangible economic benefits are generated by these heavily subsidized professional sports facilities, remains a puzzle.