> Unions hold countries hostage by closing down rail or airports. Still, a solution that doesn't cost 1 billion dollars per person is always found.
Completely different situation. You only need the majority of the workers in the union. No single person or small group of people can hold up the process.
For this situation to be at all similar to a union negation, you’d need to group all affected property owners together, offer them some multiple of property value each and ask for a group vote as a binding decision.
That’s still eminent domain, just potentially with a higher payout, which equates to a higher cost to the taxpayers.