Thats some Wealth of Nations every worker can move the same number of bricks reductive thinking.
I have been in the valley for 25+ years, and worked with a ton of visa holders.
The majority of them were better educated and all well compensated for the work they did. The fact that many of them stayed for green cards and citizenship says a LOT. There is a reason that the boss of both google, and MS came through these programs.
No it isn’t.
There are two instances on this website where supply and demand seemingly do not apply. Wages in tech engineering, and housing costs. Specific carve outs are always made to make the conclusion that, for some reason, this positive supply (workers) and demand (housing) shock has no or marginal impact on wages and housing respectively. It’s very odd since most here work in roles where supply and demand of course apply so it’s not like people are unfamiliar with the math here.