In response to a collapsing population, Youngstown, Ohio has made the obvious, though politically audacious, decision to downsize the city.
They are demolishing abandoned homes, and in nearly deserted blocks, giving grants to move the last residents out, and then tearing up the streets and power lines, and converting them to green spaces.
It saves money on maintenance, street lights, etc.
It certainly makes a lot more sense than some of the schemes which have taxpayers paying well upwards of $100K/job to subsidize employers.