A significant portion of that funding in each case comes from PSLs. Definitely a more targeted fund raiser than using government money, but not exactly the owner's pocket either. I think Richardson in Carolina did this for their expansion franchise stadium, didn't he? I am not sure this represents a recent change in stadium financing.
A PSL could represent a revenue source that could be tapped for other uses by the team, but I am unsure it would be as easy a sell if the funds did not go to stadium construction costs.