Compare the no build scenario to the scenario where you build one more apartment, but that one new apartment is smaller than you want.
In the no build scenario, the person who wants to move to Geneva doesn't get to, or they have to rent a room in an existing apartment.
In the scenario where you build that one additional apartment, a person moves into it instead. So they make a choice that that was better than their existing situation.
That choice is someone increasing their comfort level. There are lots of housing situations that are worse than a new apartment, even a very small one.
The mistake is not realizing that everyone who moves into a new unit is increasing their comfort.
I know that sounds weird, but bear with me.
Compare the no build scenario to the scenario where you build one more apartment, but that one new apartment is smaller than you want.
In the no build scenario, the person who wants to move to Geneva doesn't get to, or they have to rent a room in an existing apartment.
In the scenario where you build that one additional apartment, a person moves into it instead. So they make a choice that that was better than their existing situation.
That choice is someone increasing their comfort level. There are lots of housing situations that are worse than a new apartment, even a very small one.
The mistake is not realizing that everyone who moves into a new unit is increasing their comfort.