Why would a city not want to be inundated by tens of thousands of people on roads, paths, and transit routes that were not meant for tens of thousands of people?

During the Giants World Series, parking surged about 10x in pricing. Traffic ground to a halt. People walked miles just to get to the stadium. The surrounding neighborhood was drown by these people who were not there to spend money at shops.

Over the last thirty years, building sports stadiums has served as a profitable undertaking for large sports teams, at the expense of the general public. While there are some short-term benefits, the inescapable truth is that the economic impact of these projects on their communities is minimal, while they can be an obstacle to real development in local neighborhoods.

https://econreview.studentorg.berkeley.edu/the-economics-of-sports-stadiums-does-public-financing-of-sports-stadiums-create-local-economic-growth-or-just-help-billionaires-improve-their-profit-margin/

Edit: see also https://lemmy.world/post/19601342