I think at this point the building is way too heavy to ever fix and they should demolish it and cut the losses.

It happens all the time in China because of weak building codes.

Once a structure is compromised like this, there really is no sound way to salvage it in my experience, and it's a danger to the entire neighborhood, not only the occupants.

The bad part is that many of the occupants will suffer either way this goes... All insurance payouts should go to the unit buyers before any of the people involved in profiting get anything, but things never work that way. Attorneys will likely profit the most. The people responsible for the failed design and build should be blacklisted from future projects of this kind, that is where most injustice usually manifests in failures like this.