Infrastructure has to be self financed otherwise it's a waste of resources. That's why rural areas do not have internet. It fails every time
Then someone had the idea to reverse the cause effect relationship in a way to promote moving people to smaller towns and away from big cities. To the point of Italy selling houses for €1 to motivate people to move back from big cities. It doesn't work.
But in general that's not true. In particular, public resources such as electricity and water are installed for a specific planned capacity... the limit of how much resources to install is how much we can pay it back.
Public infrastructure is financed from taxes which is financed from jobs, this there's a cause effect relationship between infrastructure and productivity. That's the very meaning of self financed.