> At some point the only lever left to pull is outright banning of foreigners.
That does not follow at all. If you look at the actual densities Barcelona is 1/3 as dense as the densest city in the world. There is plenty of room to accommodate more housing, they just need to build higher.
That does not follow at all. If you look at the actual densities Barcelona is 1/3 as dense as the densest city in the world. There is plenty of room to accommodate more housing, they just need to build higher.