There are certainly real risks to governments using the mantra of "build it and they will come", as shown by both the Olympic Village, Lower Lonsdale and Stockton, CA debacles.
http://www.bbc.com/news/world-us-canada-18605326
Having said that... I think the private investors got it wrong early on in this case and chickened out too early for fear their short-term profit would suffer, and now the city is cashing in on the benefit of the doubt in the long run. And this isn't the only local success story: although it's mostly under the radar, Surrey isn't doing too bad at present at drawing in investors + residents and redeveloping its downtown via the SCDC.
Anyway, I'm pretty sure that most city governments in this region are smart enough to know by now that one must still do their due-diligence and engage in a benefit-cost-risk analysis before moving ahead with such grandiose projects. And so far, most of them have played it safe while still going where others thought was impossible.