It similarly seems unlikely that Brazil will have a use for 12 world-class soccer stadiums, seven of them new, not to mention the array of arenas needed for the 2016 Olympics.
Even in the United States, there is a growing realization that the Olympics aren't a great economic investment. New York City and Philadelphia recently abandoned their plans to seek the 2024 Games, although there are still several U.S. cities still in the hunt.
There is occasional chatter about establishing a permanent location for the Olympics. That is unlikely as long as cities and nations see such events as their ticket to global prominence.
It's an expensive mirage.