Comment by Saline9515

It's not just a narrative and has been proven true, at least for (2).[0]

For (1), I think that a good discussion with any business owner in a migrant-dominated field will tell you that hiring foreigners is done to keep costs low and avoid Baumol's law. As a result, locals don't want to work in such fields, reinforcing the need for migrants.

[0] https://scanalyst.fourmilab.ch/uploads/default/original/2X/9...