A 2007 study by the National Taxpayers Union Foundation found heavily subsidized stadium projects were significantly more expensive on average than largely privately funded projects. The study found stadiums where taxpayers bore a majority of the cost were $65 million more expensive on average than those for which private entities paid the bulk of the tab.Not at all surprising. Private enterprises are motivated by profit, so they have a strong incentive to keep costs under control. Any time the government gets involved the priority becomes appearances and vote-getting.
[h/t John Hood]