Even before getting into the more serious economic problems with the study, let’s look at the raw data itself. With a metropolitan area population of 2.1 million, a $500 million impact on the area would mean that every single man, woman and child the region will be engaging in an average of $240 in Caviliers related spending every year for the rest of James’ career. Possible, but unlikely.If you needed more analysis, there's always Field of Schemes:
The bigger problem with Fitzgerald’s claim is that it falls prey to one of the most serious fallacies in economic impact analysis: the failure to account for the substitution effect. Any money spent by local residents at Cavs games is money not spent elsewhere in the local economy. The extra 150,000 fans that will be going to watch LeBron next year are 150,000 less people going out to nightclubs, restaurants, and theaters. The higher ticket prices that fans will be paying leaves less disposable income to spend on Indians or Browns games, or movie tickets, or bowling, or free-style skydiving, or whatever it is that Clevelanders would do, and have been doing, without being able to watch LeBron win games. Similarly, every kid in Cleveland will be getting a LeBron jersey for Christmas or Hanukkah this winter but this doesn’t mean they will be getting more presents, just different presents. The jersey manufacturers’ gains are equally matched by losses for the makers of ugly sweaters.
Last year the Cavs sold 710,000 tickets, and had 132,000 go unsold. Even if the team were, let’s say, to double ticket prices next year, each of those 132,000 new attendees would have to spend $3560 apiece on their visit to a game in order to generate $500 million in economic activity.A little piece of Bloomberg's credibility died with the publishing of that piece.