I don't know. When cities get involved in a venture like this, it's usually because that is what their citizens want. For example, Levi Stadium in Santa Clara went before the voters, who approved it's funding model (1). On a moral level, I have a real problem with a sport that when played successfully leads to debilitating brain damage (2), but it's pretty clear I am in the minority on that. 1. Without going too far…
Excuse me, local resident here. Santa Clara City residents approved $400 million in financing. City Council went ahead with a promise for ... $1.3 billion so far. So most of it was not voted on at all.
A lot of folks seem to believe there's a legal apparatus we need to invent that can solve this, when it's perfectly sufficient to just get traction for a critical stance on concussionball (gasp!)