Yet they built the paywall.
There seem like a lot of obvious objections that are not addressed and raises more questions than it asks.
> Workers in rich countries earn more than those in poor countries partly because they are better educated but mostly because they live in societies that have, over many years, developed institutions that foster prosperity and peace
What are these institutions, and would they be damaged at all by free movement? If the people in good_country made the institutions, and they get demographically boxed out by people in other_countries, what happens? What are "institutions," exactly? Why did other_countries grow bad institutions? Would emigrants damage those countries further? The article semi asks these questions then drops the thread.
I think articles like this tend to simplify or handwave the caveats in unrealistic ways, so their result is always a lopsided analysis. Example of such a simplification:
> But most Western cities could build much higher than they do, creating more space.
Yeah they could, but most won't. See: The bay area, Boston, NYC. (A few do: Montreal, or Tokyo, which added more housing than all of California last year)