gw mostly has it right here. If this effort is seen as a failure it will be used as an example by the many opponents of such moves to defeat any future such efforts, and those who spent their political capital to make this version happen will not be in position to fight back. There are very few examples of things like this that are large getting second chances.
Also this is simply an unusually great opportunity, a lot of things have already gone right that we would have expected to go wrong. A second effort even if it happened would likely end up fake.
gw mostly has it right here. If this effort is seen as a failure it will be used as an example by the many opponents of such moves to defeat any future such efforts, and those who spent their political capital to make this version happen will not be in position to fight back. There are very few examples of things like this that are large getting second chances.
Also this is simply an unusually great opportunity, a lot of things have already gone right that we would have expected to go wrong. A second effort even if it happened would likely end up fake.