My understanding is that this kind of thing is very common in the US as it provides incentives for their sports franchises to remain in the city instead of moving elsewhere. Unlike in Europe (the UK at least) where teams tend to fund their own stuff as it’s essentially verboten to move towns (MK Dons is still disliked for that and it required an entire comission to figure out if you were actually allowed to do that)
I wouldn’t call it very common. It is true that communities have paid for stadiums, etc… in the past to secure teams but I think that is an increasingly unpopular practice as it is seen as subsidizing the wealthy through tax payer funds.
This is the same to me, rich people insisting the working class pay for something that they don’t need, want or will even be able to enjoy themselves