I think L.A. were the first in decades to spin a profit weren't they, in 1984?
And few have been anything but a major loss since.
However I don't know if all gains are included in the calculations properly; Sydney is still using the OG precinct a lot (more so as time goes by), the athlete accommodation is now thousands of family homes which is prolly a good thing given the lack of such things in general, a lot of the minor venues get used a lot by the Sport Nutters who do things there ... but the calculations on gain:loss are only going to be stuff like tourism revenue (although AFAIK Sydney & by extension the rest of Oz had a massive step-up in That Sort Of Thing as a result of the Limpix).
I personally CGAF about sportsball, people running around, people jumping in ponds and trying to be the first to the other end, etc etc etc. All seems like a waste of effort to this lil' black duck.