The pain of Chicago's loss of the 2016 Summer Olympic Games to Rio deJaneiro is palpable across the country, especially in the Windy City.Local officials had proposed a bevy of new commercial venues in andaround Chicago to accommodate the various competitions; the developmentactivity would have been a big boost for the city. Now, commercial realestate industry players, still reeling from the rejection, arereflecting on what might have been.