Yeah, it didn't work too well when they tried to sell off portions of Montreal Olympic Stadium. It ended up taking them 30 years to pay it off since there were no takers, right?
Oh, wait, this is a little different

. There is actually a viable way to recover costs. Vancouver gains something valuable as well, a former industrial area transformed into a new neighborhood, which will serve as the heart of an area for even more residences and investment in the future.
Yes, it is possible the sales won't entirely cover the entire costs; but who honestly thinks there will be absolutely NO value to the real estate properties on the shores of False Creek after the Games? Show of hands, so to speak.
Also, the fact the facilities being built will become community centers and athletic centers afterward means those "costs" create capital improvements with lasting value to the communities. And those costs were shared by several municipalities since facilities were built in several different areas.
People will have their opinion either way. Those that think the Games have been too costly are going to believe that no matter what the ultimate circumstances. Those that think they are worthwhile will feel that way regardless.
But so far, the arguments I see against them tend to be rather vague, more fearful than factual.