Forbes calculates that players in the Super Bowl will, on average, be worse off financially for having shown up to play (spending 7 days in California subjects them to state income tax on a portion of their 2016 earnings). Rather than force players to take a cut in spending power, why not always have the Super Bowl in tax-free Florida, Nevada, or Texas? It would be sold-out regardless of location, right?
Separately, if you want to fly on a mostly empty plane, buy a ticket during the Super Bowl. JetBlue BOS to DEN at 7:45 pm was not a popular choice for others!