How to disassemble a skyscraper but not its neighborhood?
improbable.com
improbable.com
I think thats part of the question, too. If you made a huge building but ran out of money and had to close it, who would be responsible for the building, and who would have to pay to have it torn down?
Here is a more likely outcome: http://www.gadling.com/2011/03/08/abandoned-caracas-skyscrap...
Note the case of the Ryugyong Hotel, demonstrating that such buildings can be abandoned for long amounts of time without anything needing to be done to them.