Excellent point! We’ll drop thousands if not millions on sports.
Why are we talking about stadiums? We could argue about that all night, to the effect of we spend “x” amount of money on something which someone else thinks we shouldn’t spend public money on. Such a discussion would hardly be limited to stadiums. Then we end up arguing about budget priorities and taxes instead of what the original subject was.
A school system near me doesn’t have bus service to take kids to the high school, but you bet they have the latest and greatest when it comes to sports equipment, weight rooms, etc. Amazing.