If you want a good concrete example of how Super Bowl economic-benefit claims are bunk, just keep in mind this paragraph from a Sunday New York Times article on the subject:
In a forthcoming paper, [Berry College economist Frank] Stephenson examines the 2012 Indianapolis Super Bowl, which generated 224,000 hotel stays, according to its economic impact report. Indianapolis serves as an apt comparison to Minneapolis since it is a cold-weather city in the Midwest. Actually, in the week leading up to the Super Bowl and the three days afterward, Indianapolis hotels rented an additional 49,000 rooms compared with what would be expected, less than a quarter of the estimate.
That is a large discrepancy! We’ll have to wait for Berry’s full paper to get into the nitty-gritty of where all those Super Bowl visitors are staying, but it certainly helps explain why other economists like Holy Cross’s Victor Matheson have found the economic impact of the game to be less than a quarter what the NFL and host cities claim.
Stephenson goes on to note that there’s likely a ton of leakage of that money from the local economy, since fans “don’t give it to the housekeeper or bellboy or front-desk person; a lot of it just flows to whoever owns the hotel” — or as Matheson once put it, “Imagine an airplane landing at an airport and everyone gets out and gives each other a million bucks, then gets back on the plane. That’s $200 million in economic activity, but it’s not any benefit to the local economy.”
Meanwhile, the city of Minneapolis is spending $50 million on hosting the game (on top of the billion dollars or so it put into the Vikings‘ new stadium that’s hosting it), though it says it’s raised it from corporate donors. I think I’ll wait to see what the actual numbers look like after the fact, though — it’s becoming increasingly clear that when it comes to the Super Bowl, you want to check the final bill, not the initial estimates.