There are countries with 100 million people, meaning the percentage of construction workers, teachers, and real estate agents from 100 million people would be enough to build enough housing for 100 million people.
Also aren’t virtually all roads, schools, and houses built by immigrants currently?
Infrastructure isn’t tied directly to labour available.
There needs to be enough time to construct, enough money to invest, enough space to have proper city layouts etc.
You can’t just build a water treatment plant anywhere.
You also can only build housing and schools and hospitals so fast, an extra 100 million people in America in less than ten years would mean and extra 25% or everything needing to be built in less than ten years.
At the moment government doesn’t fund construction of housing, so that’s an entire system that needs to put in place before letting everyone in.
Plus a bunch of other issues that I can’t even think about I imagine.
You can’t envision it because you live in a country that is currently incapable of maintaining basic infrastructure and providing the most bare minimum housing for its populace, much less expanding it.
That’s not true for elsewhere in the world, nor is it true historically.
10 million dedicated laborers (10%) is an insane amount of manpower.
compostgoblin
Pyr