Well, in this case the investments were originally sold by the city, based on the promise that the city would use its authority to maintain their scarcity, so I don't think it's unreasonable for the city to offer some kind of bailout.
Where was that promise codified?
Perhaps do just a modicum of research before making such false and uninformed assertions:
http://www.nyc.gov/html/media/totweb/taxioftomorrow_history_...