It's what I now have the privilege of saying to twentysomethings like Emma every single day: 30 is not the new 20, so claim your adulthood, get some identity capital, use your weak ties, pick your family.
The railroad industry as a whole, despite its brightening fortunes, still does not earn enough to cover the cost of the capital it must invest to keep up with its surging traffic.
For the sending countries, it reduces domestic pressure to pursue needed political and economic reform, and drains them of the human capital necessary to motivate and implement those reforms.