I don't know the answer to that exactly, suffice to say that I'm all in favor of building apartments, but there is no obvious limit to how many people might wan

I don't know the answer to that exactly, suffice to say that I'm all in favor of building apartments, but there is no obvious limit to how many people might want to live in a city. If Lisbon is a global city, there's no amount of apartments they can build to ensure that there are enough for natives.