Saw this today and thought it was interesting. According to the New York City Economic Development Corporation each home baseball playoff game generates $11.6M in economic impact. So even if we cut that in half (45,000 people at Citi Field vs. a normal match for us) that's still maybe $5M per. I haven't done any research on this so maybe it's less but still that's a lot of hot dogs, souvenirs, jobs, neighborhood restaurant traffic, etc.
That's a good bit of tangible benefit for a stadium. And I understand those people would also show up at Yankee Stadium too. Any economics majors on the forums who can comment?
http://www.amny.com/sports/mets-playoff-run-boosts-city-s-economy-by-46-4m-1.11008871
You are still completely missing the point.
For starters, those are bogus numbers that don't account for the fact that most of that revenue would have been generated by other forms of entertainment in the city if not for the playoff game. "Economic impact" is not the same as profits for the city or revenues or any other tangible number. It's made up.
But more importantly, the "economic impact" doesn't change if they are in a new stadium vs. Yankee Stadium. You'll generate the same impact on the city either way, so why should the city give 1 penny (or 1 penny of tax breaks) to the richest family on the planet to build a new stadium when there is no clear benefit?